1086620931 has 18 divisors (see below), whose sum is σ = 1712768148. Its totient is φ = 658359360.

The previous prime is 1086620911. The next prime is 1086620933. The reversal of 1086620931 is 1390266801.

It is not a de Polignac number, because 1086620931 - 2⁷ = 1086620803 is a prime.

It is a super-2 number, since 2×1086620931² = 2361490095374613522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1086620933) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 326331 + ... + 329643.

It is an arithmetic number, because the mean of its divisors is an integer number (95153786).

Almost surely, 2^1086620931 is an apocalyptic number.

1086620931 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1086620931 is a deficient number, since it is larger than the sum of its proper divisors (626147217).

1086620931 is an frugal number, since it uses more digits than its factorization.

1086620931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6643 (or 3327 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 1086620931 is about 32963.9337913423. The cubic root of 1086620931 is about 1028.0778968033.

The spelling of 1086620931 in words is "one billion, eighty-six million, six hundred twenty thousand, nine hundred thirty-one".