1900242951049 has 9 divisors (see below), whose sum is σ = 1907372894349. Its totient is φ = 1893139576620.

The previous prime is 1900242951017. The next prime is 1900242951067. The reversal of 1900242951049 is 9401592420091.

It is a happy number.

The square root of 1900242951049 is 1378493.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 1900242951049 - 2⁵ = 1900242951017 is a prime.

It is a super-2 number, since 2×1900242951049² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1900242951449) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 390111084 + ... + 390115954.

Almost surely, 2^{1900242951049} is an apocalyptic number.

1900242951049 is the 1378493-rd square number.

1900242951049 is the 689247-th centered octagonal number.

It is an amenable number.

1900242951049 is a deficient number, since it is larger than the sum of its proper divisors (7129943300).

1900242951049 is an frugal number, since it uses more digits than its factorization.

1900242951049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10308 (or 5154 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 46.

The spelling of 1900242951049 in words is "one trillion, nine hundred billion, two hundred forty-two million, nine hundred fifty-one thousand, forty-nine".