151795391 has 4 divisors (see below), whose sum is σ = 165594984. Its totient is φ = 137995800.

The previous prime is 151795387. The next prime is 151795411. The reversal of 151795391 is 193597151.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 193597151 = 11 ⋅17599741.

It is a cyclic number.

It is not a de Polignac number, because 151795391 - 2² = 151795387 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 (151795321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6899780 + ... + 6899801.

It is an arithmetic number, because the mean of its divisors is an integer number (41398746).

Almost surely, 2^151795391 is an apocalyptic number.

151795391 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

151795391 is a deficient number, since it is larger than the sum of its proper divisors (13799593).

151795391 is a wasteful number, since it uses less digits than its factorization.

151795391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13799592.

The product of its digits is 42525, while the sum is 41.

The square root of 151795391 is about 12320.5272208619. The cubic root of 151795391 is about 533.4407577447.

The spelling of 151795391 in words is "one hundred fifty-one million, seven hundred ninety-five thousand, three hundred ninety-one".