1498779648 has 156 divisors (see below), whose sum is σ = 4380710620. Its totient is φ = 493682688.

The previous prime is 1498779637. The next prime is 1498779673. The reversal of 1498779648 is 8469778941.

It can be written as a sum of positive squares in 2 ways, for example, as 931958784 + 566820864 = 30528^2 + 23808^2 .

Its product of digits (24385536) is a multiple of the sum of its prime factors (512).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4017990 + ... + 4018362.

Almost surely, 2^1498779648 is an apocalyptic number.

1498779648 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 1498779648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2190355310).

1498779648 is an abundant number, since it is smaller than the sum of its proper divisors (2881930972).

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

1498779648 is a wasteful number, since it uses less digits than its factorization.

1498779648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512 (or 487 counting only the distinct ones).

The product of its digits is 24385536, while the sum is 63.

The square root of 1498779648 is about 38714.0755798198. The cubic root of 1498779648 is about 1144.4037240365.

The spelling of 1498779648 in words is "one billion, four hundred ninety-eight million, seven hundred seventy-nine thousand, six hundred forty-eight".