1144638154 has 8 divisors (see below), whose sum is σ = 1873044288. Its totient is φ = 520290060.

The previous prime is 1144638127. The next prime is 1144638161. The reversal of 1144638154 is 4518364411.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26014482 + ... + 26014525.

It is an arithmetic number, because the mean of its divisors is an integer number (234130536).

Almost surely, 2^1144638154 is an apocalyptic number.

1144638154 is a deficient number, since it is larger than the sum of its proper divisors (728406134).

1144638154 is a wasteful number, since it uses less digits than its factorization.

1144638154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52029020.

The product of its digits is 46080, while the sum is 37.

The square root of 1144638154 is about 33832.5014446168. The cubic root of 1144638154 is about 1046.0587406248.

The spelling of 1144638154 in words is "one billion, one hundred forty-four million, six hundred thirty-eight thousand, one hundred fifty-four".