149423994919 has 2 divisors, whose sum is σ = 149423994920. Its totient is φ = 149423994918.

The previous prime is 149423994911. The next prime is 149423994943. The reversal of 149423994919 is 919499324941.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 149423994919 - 2³ = 149423994911 is a prime.

It is a super-2 number, since 2×149423994919² (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 (149423994911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74711997459 + 74711997460.

It is an arithmetic number, because the mean of its divisors is an integer number (74711997460).

Almost surely, 2^149423994919 is an apocalyptic number.

149423994919 is a deficient number, since it is larger than the sum of its proper divisors (1).

149423994919 is an equidigital number, since it uses as much as digits as its factorization.

149423994919 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22674816, while the sum is 64.

The spelling of 149423994919 in words is "one hundred forty-nine billion, four hundred twenty-three million, nine hundred ninety-four thousand, nine hundred nineteen".