190021790038 has 4 divisors (see below), whose sum is σ = 285032685060. Its totient is φ = 95010895018.

The previous prime is 190021789957. The next prime is 190021790041. The reversal of 190021790038 is 830097120091.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×190021790038² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47505447508 + ... + 47505447511.

It is an arithmetic number, because the mean of its divisors is an integer number (71258171265).

Almost surely, 2^190021790038 is an apocalyptic number.

190021790038 is a deficient number, since it is larger than the sum of its proper divisors (95010895022).

190021790038 is an equidigital number, since it uses as much as digits as its factorization.

190021790038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95010895021.

The product of its (nonzero) digits is 27216, while the sum is 40.

The spelling of 190021790038 in words is "one hundred ninety billion, twenty-one million, seven hundred ninety thousand, thirty-eight".