190051538 has 4 divisors (see below), whose sum is σ = 285077310. Its totient is φ = 95025768.

The previous prime is 190051513. The next prime is 190051549. The reversal of 190051538 is 835150091.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 835150091 = 29 ⋅28798279.

It can be written as a sum of positive squares in only one way, i.e., 140588449 + 49463089 = 11857^2 + 7033^2 .

It is a super-2 number, since 2×190051538² = 72239174192330888, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47512883 + ... + 47512886.

Almost surely, 2^190051538 is an apocalyptic number.

190051538 is a deficient number, since it is larger than the sum of its proper divisors (95025772).

190051538 is an equidigital number, since it uses as much as digits as its factorization.

190051538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95025771.

The product of its (nonzero) digits is 5400, while the sum is 32.

The square root of 190051538 is about 13785.9181050810. The cubic root of 190051538 is about 574.9416833107.

The spelling of 190051538 in words is "one hundred ninety million, fifty-one thousand, five hundred thirty-eight".