151099493 has 2 divisors, whose sum is σ = 151099494. Its totient is φ = 151099492.

The previous prime is 151099447. The next prime is 151099499. The reversal of 151099493 is 394990151.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 100661089 + 50438404 = 10033^2 + 7102^2 .

It is a cyclic number.

It is not a de Polignac number, because 151099493 - 2²² = 146905189 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 151099493.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (151099499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75549746 + 75549747.

It is an arithmetic number, because the mean of its divisors is an integer number (75549747).

Almost surely, 2^151099493 is an apocalyptic number.

It is an amenable number.

151099493 is a deficient number, since it is larger than the sum of its proper divisors (1).

151099493 is an equidigital number, since it uses as much as digits as its factorization.

151099493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43740, while the sum is 41.

The square root of 151099493 is about 12292.2533735682. The cubic root of 151099493 is about 532.6243318016.

The spelling of 151099493 in words is "one hundred fifty-one million, ninety-nine thousand, four hundred ninety-three".