151900391 has 8 divisors (see below), whose sum is σ = 152805744. Its totient is φ = 150998400.

The previous prime is 151900387. The next prime is 151900409. The reversal of 151900391 is 193009151.

151900391 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 151900391 - 2² = 151900387 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151900691) 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, 216341 + ... + 217041.

It is an arithmetic number, because the mean of its divisors is an integer number (19100718).

Almost surely, 2^151900391 is an apocalyptic number.

151900391 is a deficient number, since it is larger than the sum of its proper divisors (905353).

151900391 is an equidigital number, since it uses as much as digits as its factorization.

151900391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1681.

The product of its (nonzero) digits is 1215, while the sum is 29.

The square root of 151900391 is about 12324.7876655138. The cubic root of 151900391 is about 533.5637267173.

The spelling of 151900391 in words is "one hundred fifty-one million, nine hundred thousand, three hundred ninety-one".