1349899488 has 144 divisors (see below), whose sum is σ = 4398147936. Its totient is φ = 384721920.

The previous prime is 1349899487. The next prime is 1349899493. The reversal of 1349899488 is 8849989431.

1349899488 is a `hidden beast` number, since 13 + 498 + 99 + 48 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1349899483) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1332070 + ... + 1333082.

It is an arithmetic number, because the mean of its divisors is an integer number (30542694).

Almost surely, 2^1349899488 is an apocalyptic number.

1349899488 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1349899488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2199073968).

1349899488 is an abundant number, since it is smaller than the sum of its proper divisors (3048248448).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1349899488 is a wasteful number, since it uses less digits than its factorization.

1349899488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1697 (or 1686 counting only the distinct ones).

The product of its digits is 17915904, while the sum is 63.

The square root of 1349899488 is about 36740.9783212151. The cubic root of 1349899488 is about 1105.1820200688.

The spelling of 1349899488 in words is "one billion, three hundred forty-nine million, eight hundred ninety-nine thousand, four hundred eighty-eight".