151391616 has 32 divisors (see below), whose sum is σ = 402135000. Its totient is φ = 50463744.

The previous prime is 151391609. The next prime is 151391633. The reversal of 151391616 is 616193151.

It is a tau number, because it is divible by the number of its divisors (32).

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, 196741 + ... + 197508.

Almost surely, 2^151391616 is an apocalyptic number.

151391616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

151391616 is an abundant number, since it is smaller than the sum of its proper divisors (250743384).

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

151391616 is an equidigital number, since it uses as much as digits as its factorization.

151391616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394266 (or 394254 counting only the distinct ones).

The product of its digits is 4860, while the sum is 33.

The square root of 151391616 is about 12304.1300383245. The cubic root of 151391616 is about 532.9673544745.

The spelling of 151391616 in words is "one hundred fifty-one million, three hundred ninety-one thousand, six hundred sixteen".