1900142497 has 12 divisors (see below), whose sum is σ = 2122833748. Its totient is φ = 1699077600.

The previous prime is 1900142483. The next prime is 1900142501. The reversal of 1900142497 is 7942410091.

It can be written as a sum of positive squares in 2 ways, for example, as 454926241 + 1445216256 = 21329^2 + 38016^2 .

It is not a de Polignac number, because 1900142497 - 2⁷ = 1900142369 is a prime.

It is a super-2 number, since 2×1900142497² = 7221083017810790018, which contains 22 as substring.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1900142197) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 121338 + ... + 136099.

Almost surely, 2^1900142497 is an apocalyptic number.

It is an amenable number.

1900142497 is a deficient number, since it is larger than the sum of its proper divisors (222691251).

1900142497 is a wasteful number, since it uses less digits than its factorization.

1900142497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257520 (or 257509 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 1900142497 is about 43590.6239574521. The cubic root of 1900142497 is about 1238.5932922625.

The spelling of 1900142497 in words is "one billion, nine hundred million, one hundred forty-two thousand, four hundred ninety-seven".