151191923 has 2 divisors, whose sum is σ = 151191924. Its totient is φ = 151191922.

The previous prime is 151191883. The next prime is 151192003. The reversal of 151191923 is 329191151.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 151191923 - 2²⁶ = 84083059 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 151191923.

It is not a weakly prime, because it can be changed into another prime (151191823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75595961 + 75595962.

It is an arithmetic number, because the mean of its divisors is an integer number (75595962).

Almost surely, 2^151191923 is an apocalyptic number.

151191923 is a deficient number, since it is larger than the sum of its proper divisors (1).

151191923 is an equidigital number, since it uses as much as digits as its factorization.

151191923 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2430, while the sum is 32.

The square root of 151191923 is about 12296.0124837282. The cubic root of 151191923 is about 532.7329146324.

The spelling of 151191923 in words is "one hundred fifty-one million, one hundred ninety-one thousand, nine hundred twenty-three".