1149478637 has 4 divisors (see below), whose sum is σ = 1160221536. Its totient is φ = 1138735740.

The previous prime is 1149478619. The next prime is 1149478639. The reversal of 1149478637 is 7368749411.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7368749411 = 79 ⋅93275309.

It is a cyclic number.

It is not a de Polignac number, because 1149478637 - 2²⁴ = 1132701421 is a prime.

It is a super-2 number, since 2×1149478637² = 2642602273838755538, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1149478639) 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, 5371289 + ... + 5371502.

It is an arithmetic number, because the mean of its divisors is an integer number (290055384).

Almost surely, 2^1149478637 is an apocalyptic number.

It is an amenable number.

1149478637 is a deficient number, since it is larger than the sum of its proper divisors (10742899).

1149478637 is a wasteful number, since it uses less digits than its factorization.

1149478637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10742898.

The product of its digits is 1016064, while the sum is 50.

The square root of 1149478637 is about 33903.9619661184. The cubic root of 1149478637 is about 1047.5312026978.

The spelling of 1149478637 in words is "one billion, one hundred forty-nine million, four hundred seventy-eight thousand, six hundred thirty-seven".