1051906986 has 40 divisors (see below), whose sum is σ = 2538367524. Its totient is φ = 323663040.

The previous prime is 1051906969. The next prime is 1051906993. The reversal of 1051906986 is 6896091501.

It can be written as a sum of positive squares in 2 ways, for example, as 757955961 + 293951025 = 27531^2 + 17145^2 .

It is a super-2 number, since 2×1051906986² = 2213016614391208392, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 247635 + ... + 251846.

Almost surely, 2^1051906986 is an apocalyptic number.

1051906986 is an abundant number, since it is smaller than the sum of its proper divisors (1486460538).

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

1051906986 is a wasteful number, since it uses less digits than its factorization.

1051906986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499508 (or 499499 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 45.

The square root of 1051906986 is about 32433.1155765215. The cubic root of 1051906986 is about 1017.0113032915.

It can be divided in two parts, 105 and 1906986, that added together give a palindrome (1907091).

The spelling of 1051906986 in words is "one billion, fifty-one million, nine hundred six thousand, nine hundred eighty-six".