1918531022 has 16 divisors (see below), whose sum is σ = 3048784272. Its totient is φ = 902332800.

The previous prime is 1918531019. The next prime is 1918531033. The reversal of 1918531022 is 2201358191.

It is a happy number.

It is a super-2 number, since 2×1918531022² = 7361522564752728968, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1918531022.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49793 + ... + 79475.

It is an arithmetic number, because the mean of its divisors is an integer number (190549017).

Almost surely, 2^1918531022 is an apocalyptic number.

1918531022 is a deficient number, since it is larger than the sum of its proper divisors (1130253250).

1918531022 is a wasteful number, since it uses less digits than its factorization.

1918531022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31603.

The product of its (nonzero) digits is 4320, while the sum is 32.

The square root of 1918531022 is about 43801.0390516024. The cubic root of 1918531022 is about 1242.5759453840.

The spelling of 1918531022 in words is "one billion, nine hundred eighteen million, five hundred thirty-one thousand, twenty-two".