1121938690 has 32 divisors (see below), whose sum is σ = 2056700160. Its totient is φ = 440529024.

The previous prime is 1121938669. The next prime is 1121938709. The reversal of 1121938690 is 968391211.

It is a super-2 number, since 2×1121938690² = 2517492848237832200, which contains 22 as substring.

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, 782214 + ... + 783646.

It is an arithmetic number, because the mean of its divisors is an integer number (64271880).

Almost surely, 2^1121938690 is an apocalyptic number.

1121938690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1121938690 is a deficient number, since it is larger than the sum of its proper divisors (934761470).

1121938690 is a wasteful number, since it uses less digits than its factorization.

1121938690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2826.

The product of its (nonzero) digits is 23328, while the sum is 40.

The square root of 1121938690 is about 33495.3532598180. The cubic root of 1121938690 is about 1039.0976795137.

The spelling of 1121938690 in words is "one billion, one hundred twenty-one million, nine hundred thirty-eight thousand, six hundred ninety".