1900000538 has 8 divisors (see below), whose sum is σ = 2850450132. Its totient is φ = 949850496.

The previous prime is 1900000519. The next prime is 1900000547. The reversal of 1900000538 is 8350000091.

It can be written as a sum of positive squares in 2 ways, for example, as 1089858169 + 810142369 = 33013^2 + 28463^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1900000538² = 7220004088800578888, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58295 + ... + 84842.

Almost surely, 2^1900000538 is an apocalyptic number.

1900000538 is a deficient number, since it is larger than the sum of its proper divisors (950449594).

1900000538 is a wasteful number, since it uses less digits than its factorization.

1900000538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149776.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 1900000538 is about 43588.9956066895. The cubic root of 1900000538 is about 1238.5624465331.

The spelling of 1900000538 in words is "one billion, nine hundred million, five hundred thirty-eight", and thus it is an aban number.