149718525919 has 2 divisors, whose sum is σ = 149718525920. Its totient is φ = 149718525918.

The previous prime is 149718525911. The next prime is 149718525947. The reversal of 149718525919 is 919525817941.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 149718525919 - 2³ = 149718525911 is a prime.

It is a super-2 number, since 2×149718525919² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149718525911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74859262959 + 74859262960.

It is an arithmetic number, because the mean of its divisors is an integer number (74859262960).

Almost surely, 2^149718525919 is an apocalyptic number.

149718525919 is a deficient number, since it is larger than the sum of its proper divisors (1).

149718525919 is an equidigital number, since it uses as much as digits as its factorization.

149718525919 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8164800, while the sum is 61.

The spelling of 149718525919 in words is "one hundred forty-nine billion, seven hundred eighteen million, five hundred twenty-five thousand, nine hundred nineteen".