1349991504 has 120 divisors (see below), whose sum is σ = 3833684192. Its totient is φ = 443439360.

The previous prime is 1349991497. The next prime is 1349991521. The reversal of 1349991504 is 4051999431.

1349991504 is a `hidden beast` number, since 1 + 3 + 499 + 9 + 150 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 1349991504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4770147 + ... + 4770429.

Almost surely, 2^1349991504 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1349991504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1916842096).

1349991504 is an abundant number, since it is smaller than the sum of its proper divisors (2483692688).

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

1349991504 is a wasteful number, since it uses less digits than its factorization.

1349991504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 665 (or 656 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 45.

The square root of 1349991504 is about 36742.2305256499. The cubic root of 1349991504 is about 1105.2071311034.

It can be divided in two parts, 134999 and 1504, that added together give a triangular number (136503 = T₅₂₂).

The spelling of 1349991504 in words is "one billion, three hundred forty-nine million, nine hundred ninety-one thousand, five hundred four".