1144664154 has 24 divisors (see below), whose sum is σ = 2502863220. Its totient is φ = 378053568.

The previous prime is 1144664149. The next prime is 1144664159. The reversal of 1144664154 is 4514664411.

1144664154 is a `hidden beast` number, since 1 + 1 + 4 + 4 + 6 + 641 + 5 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (1144664149) and next prime (1144664159).

It can be written as a sum of positive squares in 2 ways, for example, as 1009523529 + 135140625 = 31773^2 + 11625^2 .

It is not an unprimeable number, because it can be changed into a prime (1144664159) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 289747 + ... + 293670.

Almost surely, 2^1144664154 is an apocalyptic number.

1144664154 is an abundant number, since it is smaller than the sum of its proper divisors (1358199066).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1144664154 is a wasteful number, since it uses less digits than its factorization.

1144664154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 583534 (or 583531 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The square root of 1144664154 is about 33832.8856883358. The cubic root of 1144664154 is about 1046.0666608341.

The spelling of 1144664154 in words is "one billion, one hundred forty-four million, six hundred sixty-four thousand, one hundred fifty-four".