1081802931 has 16 divisors (see below), whose sum is σ = 1595697408. Its totient is φ = 646402400.

The previous prime is 1081802927. The next prime is 1081802947. The reversal of 1081802931 is 1392081801.

It is a cyclic number.

It is not a de Polignac number, because 1081802931 - 2² = 1081802927 is a prime.

It is a super-2 number, since 2×1081802931² = 2340595163040381522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 1081802892 and 1081802901.

It is not an unprimeable number, because it can be changed into a prime (1081802131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 228516 + ... + 233201.

It is an arithmetic number, because the mean of its divisors is an integer number (99731088).

Almost surely, 2^1081802931 is an apocalyptic number.

1081802931 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1081802931 is a deficient number, since it is larger than the sum of its proper divisors (513894477).

1081802931 is a wasteful number, since it uses less digits than its factorization.

1081802931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 461802.

The product of its (nonzero) digits is 3456, while the sum is 33.

The square root of 1081802931 is about 32890.7727333974. The cubic root of 1081802931 is about 1026.5561707252.

It can be divided in two parts, 108180 and 2931, that added together give a palindrome (111111).

The spelling of 1081802931 in words is "one billion, eighty-one million, eight hundred two thousand, nine hundred thirty-one".