1138657475 has 6 divisors (see below), whose sum is σ = 1411935300. Its totient is φ = 910925960.

The previous prime is 1138657463. The next prime is 1138657493. The reversal of 1138657475 is 5747568311.

It is not a de Polignac number, because 1138657475 - 2¹² = 1138653379 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22773125 + ... + 22773174.

It is an arithmetic number, because the mean of its divisors is an integer number (235322550).

Almost surely, 2^1138657475 is an apocalyptic number.

1138657475 is a deficient number, since it is larger than the sum of its proper divisors (273277825).

1138657475 is an equidigital number, since it uses as much as digits as its factorization.

1138657475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45546309 (or 45546304 counting only the distinct ones).

The product of its digits is 705600, while the sum is 47.

The square root of 1138657475 is about 33743.9990961356. Note that the first 3 decimals coincide. The cubic root of 1138657475 is about 1044.2336895457.

The spelling of 1138657475 in words is "one billion, one hundred thirty-eight million, six hundred fifty-seven thousand, four hundred seventy-five".