1051991458 has 16 divisors (see below), whose sum is σ = 1804045824. Its totient is φ = 450695520.

The previous prime is 1051991441. The next prime is 1051991461. The reversal of 1051991458 is 8541991501.

It is a super-2 number, since 2×1051991458² = 2213372055409931528, which contains 22 as substring.

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, 34063 + ... + 57133.

It is an arithmetic number, because the mean of its divisors is an integer number (112752864).

Almost surely, 2^1051991458 is an apocalyptic number.

1051991458 is a deficient number, since it is larger than the sum of its proper divisors (752054366).

1051991458 is a wasteful number, since it uses less digits than its factorization.

1051991458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26337.

The product of its (nonzero) digits is 64800, while the sum is 43.

The square root of 1051991458 is about 32434.4177996153. The cubic root of 1051991458 is about 1017.0385258123.

Adding to 1051991458 its sum of digits (43), we get a palindrome (1051991501).

The spelling of 1051991458 in words is "one billion, fifty-one million, nine hundred ninety-one thousand, four hundred fifty-eight".