1138920995 has 4 divisors (see below), whose sum is σ = 1366705200. Its totient is φ = 911136792.

The previous prime is 1138920989. The next prime is 1138921027. The reversal of 1138920995 is 5990298311.

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 1138920995 - 2²⁴ = 1122143779 is a prime.

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, 113892095 + ... + 113892104.

It is an arithmetic number, because the mean of its divisors is an integer number (341676300).

Almost surely, 2^1138920995 is an apocalyptic number.

1138920995 is a deficient number, since it is larger than the sum of its proper divisors (227784205).

1138920995 is an equidigital number, since it uses as much as digits as its factorization.

1138920995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227784204.

The product of its (nonzero) digits is 174960, while the sum is 47.

The square root of 1138920995 is about 33747.9035645179. The cubic root of 1138920995 is about 1044.3142391528.

The spelling of 1138920995 in words is "one billion, one hundred thirty-eight million, nine hundred twenty thousand, nine hundred ninety-five".