1018806490 has 32 divisors (see below), whose sum is σ = 1982848896. Its totient is φ = 374664000.

The previous prime is 1018806487. The next prime is 1018806517. The reversal of 1018806490 is 946088101.

It is a happy number.

It is a super-2 number, since 2×1018806490² = 2075933328132240200, 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, 17019 + ... + 48241.

It is an arithmetic number, because the mean of its divisors is an integer number (61964028).

Almost surely, 2^1018806490 is an apocalyptic number.

1018806490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1018806490 is a deficient number, since it is larger than the sum of its proper divisors (964042406).

1018806490 is a wasteful number, since it uses less digits than its factorization.

1018806490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31494.

The product of its (nonzero) digits is 13824, while the sum is 37.

The square root of 1018806490 is about 31918.7482523986. The cubic root of 1018806490 is about 1006.2299372824.

The spelling of 1018806490 in words is "one billion, eighteen million, eight hundred six thousand, four hundred ninety".