1902138536019 has 8 divisors (see below), whose sum is σ = 2549325568912. Its totient is φ = 1261521930240.

The previous prime is 1902138535987. The next prime is 1902138536027. The reversal of 1902138536019 is 9106358312091.

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

It is not a de Polignac number, because 1902138536019 - 2⁵ = 1902138535987 is a prime.

It is a super-2 number, since 2×1902138536019² (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 (1902138536119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1642606102 + ... + 1642607259.

It is an arithmetic number, because the mean of its divisors is an integer number (318665696114).

Almost surely, 2^{1902138536019} is an apocalyptic number.

1902138536019 is a deficient number, since it is larger than the sum of its proper divisors (647187032893).

1902138536019 is a wasteful number, since it uses less digits than its factorization.

1902138536019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3285213557.

The product of its (nonzero) digits is 349920, while the sum is 48.

The spelling of 1902138536019 in words is "one trillion, nine hundred two billion, one hundred thirty-eight million, five hundred thirty-six thousand, nineteen".