190388838745 has 12 divisors (see below), whose sum is σ = 265767277284. Its totient is φ = 130552346400.

The previous prime is 190388838737. The next prime is 190388838797. The reversal of 190388838745 is 547838883091.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 37749381264 + 152639457481 = 194292^2 + 390691^2 .

It is not a de Polignac number, because 190388838745 - 2³ = 190388838737 is a prime.

It is a super-2 number, since 2×190388838745² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 388548406 + ... + 388548895.

It is an arithmetic number, because the mean of its divisors is an integer number (22147273107).

Almost surely, 2^190388838745 is an apocalyptic number.

It is an amenable number.

190388838745 is a deficient number, since it is larger than the sum of its proper divisors (75378438539).

190388838745 is an equidigital number, since it uses as much as digits as its factorization.

190388838745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777097320 (or 777097313 counting only the distinct ones).

The product of its (nonzero) digits is 46448640, while the sum is 64.

The spelling of 190388838745 in words is "one hundred ninety billion, three hundred eighty-eight million, eight hundred thirty-eight thousand, seven hundred forty-five".