151165891 has 2 divisors, whose sum is σ = 151165892. Its totient is φ = 151165890.

The previous prime is 151165849. The next prime is 151165909. The reversal of 151165891 is 198561151.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 151165891 - 2⁹ = 151165379 is a prime.

It is a super-2 number, since 2×151165891² = 45702253203647762, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 151165891.

It is not a weakly prime, because it can be changed into another prime (151165841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75582945 + 75582946.

It is an arithmetic number, because the mean of its divisors is an integer number (75582946).

Almost surely, 2^151165891 is an apocalyptic number.

151165891 is a deficient number, since it is larger than the sum of its proper divisors (1).

151165891 is an equidigital number, since it uses as much as digits as its factorization.

151165891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10800, while the sum is 37.

The square root of 151165891 is about 12294.9538836061. The cubic root of 151165891 is about 532.7023378243.

The spelling of 151165891 in words is "one hundred fifty-one million, one hundred sixty-five thousand, eight hundred ninety-one".