1051690490 has 16 divisors (see below), whose sum is σ = 1912560552. Its totient is φ = 416338944.

The previous prime is 1051690457. The next prime is 1051690529. The reversal of 1051690490 is 940961501.

It can be written as a sum of positive squares in 4 ways, for example, as 839434729 + 212255761 = 28973^2 + 14569^2 .

It is a super-2 number, since 2×1051690490² = 2212105773512880200, 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 1051690490.

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, 541139 + ... + 543078.

Almost surely, 2^1051690490 is an apocalyptic number.

1051690490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1051690490 is a deficient number, since it is larger than the sum of its proper divisors (860870062).

1051690490 is a wasteful number, since it uses less digits than its factorization.

1051690490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1084321.

The product of its (nonzero) digits is 9720, while the sum is 35.

The square root of 1051690490 is about 32429.7778284095. Note that the first 3 decimals coincide. The cubic root of 1051690490 is about 1016.9415271646.

The spelling of 1051690490 in words is "one billion, fifty-one million, six hundred ninety thousand, four hundred ninety".