151190491 has 2 divisors, whose sum is σ = 151190492. Its totient is φ = 151190490.

The previous prime is 151190489. The next prime is 151190549. The reversal of 151190491 is 194091151.

It is a weak prime.

It is an emirp because it is prime and its reverse (194091151) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 151190491 - 2¹ = 151190489 is a prime.

Together with 151190489, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (151190461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75595245 + 75595246.

It is an arithmetic number, because the mean of its divisors is an integer number (75595246).

Almost surely, 2^151190491 is an apocalyptic number.

151190491 is a deficient number, since it is larger than the sum of its proper divisors (1).

151190491 is an equidigital number, since it uses as much as digits as its factorization.

151190491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1620, while the sum is 31.

The square root of 151190491 is about 12295.9542533306. The cubic root of 151190491 is about 532.7312327173.

The spelling of 151190491 in words is "one hundred fifty-one million, one hundred ninety thousand, four hundred ninety-one".