1502138780 has 24 divisors (see below), whose sum is σ = 3227853552. Its totient is φ = 586881792.

The previous prime is 1502138779. The next prime is 1502138783. The reversal of 1502138780 is 878312051.

It is a self number, because there is not a number n which added to its sum of digits gives 1502138780.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1502138783) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 872477 + ... + 874196.

It is an arithmetic number, because the mean of its divisors is an integer number (134493898).

Almost surely, 2^1502138780 is an apocalyptic number.

1502138780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1502138780 is an abundant number, since it is smaller than the sum of its proper divisors (1725714772).

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

1502138780 is a wasteful number, since it uses less digits than its factorization.

1502138780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1746725 (or 1746723 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 35.

The square root of 1502138780 is about 38757.4351576572. The cubic root of 1502138780 is about 1145.2580490452.

The spelling of 1502138780 in words is "one billion, five hundred two million, one hundred thirty-eight thousand, seven hundred eighty".