1391236152 has 16 divisors (see below), whose sum is σ = 3478090440. Its totient is φ = 463745376.

The previous prime is 1391236139. The next prime is 1391236193. The reversal of 1391236152 is 2516321931.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28984063 + ... + 28984110.

Almost surely, 2^1391236152 is an apocalyptic number.

1391236152 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1391236152 is an abundant number, since it is smaller than the sum of its proper divisors (2086854288).

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

1391236152 is a wasteful number, since it uses less digits than its factorization.

1391236152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57968182 (or 57968178 counting only the distinct ones).

The product of its digits is 9720, while the sum is 33.

The square root of 1391236152 is about 37299.2781699593. The cubic root of 1391236152 is about 1116.3497638296.

The spelling of 1391236152 in words is "one billion, three hundred ninety-one million, two hundred thirty-six thousand, one hundred fifty-two".