151791919 has 2 divisors, whose sum is σ = 151791920. Its totient is φ = 151791918.

The previous prime is 151791901. The next prime is 151791961. The reversal of 151791919 is 919197151.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 151791919 - 2²⁷ = 17574191 is a prime.

It is a super-2 number, since 2×151791919² = 46081573347405122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (151794919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75895959 + 75895960.

It is an arithmetic number, because the mean of its divisors is an integer number (75895960).

Almost surely, 2^151791919 is an apocalyptic number.

151791919 is a deficient number, since it is larger than the sum of its proper divisors (1).

151791919 is an equidigital number, since it uses as much as digits as its factorization.

151791919 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25515, while the sum is 43.

The square root of 151791919 is about 12320.3863169951. The cubic root of 151791919 is about 533.4366906023.

The spelling of 151791919 in words is "one hundred fifty-one million, seven hundred ninety-one thousand, nine hundred nineteen".