1022491956 has 48 divisors (see below), whose sum is σ = 2542546944. Its totient is φ = 319071456.

The previous prime is 1022491949. The next prime is 1022491957. The reversal of 1022491956 is 6591942201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022491957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26440 + ... + 52383.

It is an arithmetic number, because the mean of its divisors is an integer number (52969728).

Almost surely, 2^1022491956 is an apocalyptic number.

It is an amenable number.

1022491956 is an abundant number, since it is smaller than the sum of its proper divisors (1520054988).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1022491956 is a wasteful number, since it uses less digits than its factorization.

1022491956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78900 (or 78898 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 1022491956 is about 31976.4281307341. The cubic root of 1022491956 is about 1007.4418008895.

The spelling of 1022491956 in words is "one billion, twenty-two million, four hundred ninety-one thousand, nine hundred fifty-six".