190518120740 has 24 divisors (see below), whose sum is σ = 400358263032. Its totient is φ = 76155779840.

The previous prime is 190518120721. The next prime is 190518120787. The reversal of 190518120740 is 47021815091.

It can be written as a sum of positive squares in 4 ways, for example, as 8482778404 + 182035342336 = 92102^2 + 426656^2 .

It is a junction number, because it is equal to n+sod(n) for n = 190518120694 and 190518120703.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3186419 + ... + 3245658.

It is an arithmetic number, because the mean of its divisors is an integer number (16681594293).

Almost surely, 2^190518120740 is an apocalyptic number.

190518120740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

190518120740 is an abundant number, since it is smaller than the sum of its proper divisors (209840142292).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

190518120740 is a wasteful number, since it uses less digits than its factorization.

190518120740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6433567 (or 6433565 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 38.

The spelling of 190518120740 in words is "one hundred ninety billion, five hundred eighteen million, one hundred twenty thousand, seven hundred forty".