1011922860 has 48 divisors (see below), whose sum is σ = 3051338976. Its totient is φ = 249088512.

The previous prime is 1011922859. The next prime is 1011922871. The reversal of 1011922860 is 682291101.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 647889 + ... + 649448.

It is an arithmetic number, because the mean of its divisors is an integer number (63569562).

Almost surely, 2^1011922860 is an apocalyptic number.

1011922860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1011922860 is an abundant number, since it is smaller than the sum of its proper divisors (2039416116).

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

1011922860 is a wasteful number, since it uses less digits than its factorization.

1011922860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1297362 (or 1297360 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 30.

The square root of 1011922860 is about 31810.7349805062. The cubic root of 1011922860 is about 1003.9585955106.

The spelling of 1011922860 in words is "one billion, eleven million, nine hundred twenty-two thousand, eight hundred sixty".