149915963 has 4 divisors (see below), whose sum is σ = 149949408. Its totient is φ = 149882520.

The previous prime is 149915933. The next prime is 149915977. The reversal of 149915963 is 369519941.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 149915963 - 2²⁶ = 82807099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149915933) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8723 + ... + 19388.

It is an arithmetic number, because the mean of its divisors is an integer number (37487352).

Almost surely, 2^149915963 is an apocalyptic number.

149915963 is a deficient number, since it is larger than the sum of its proper divisors (33445).

149915963 is an equidigital number, since it uses as much as digits as its factorization.

149915963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33444.

The product of its digits is 262440, while the sum is 47.

The square root of 149915963 is about 12244.0174370996. The cubic root of 149915963 is about 531.2300409018.

The spelling of 149915963 in words is "one hundred forty-nine million, nine hundred fifteen thousand, nine hundred sixty-three".