998380513738 has 32 divisors (see below), whose sum is σ = 1608061628160. Its totient is φ = 463206781440.

The previous prime is 998380513727. The next prime is 998380513831. The reversal of 998380513738 is 837315083899.

998380513738 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 998380513738.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1587070 + ... + 2124982.

It is an arithmetic number, because the mean of its divisors is an integer number (50251925880).

Almost surely, 2^998380513738 is an apocalyptic number.

998380513738 is a deficient number, since it is larger than the sum of its proper divisors (609681114422).

998380513738 is a wasteful number, since it uses less digits than its factorization.

998380513738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 538702.

The product of its (nonzero) digits is 39191040, while the sum is 64.

The spelling of 998380513738 in words is "nine hundred ninety-eight billion, three hundred eighty million, five hundred thirteen thousand, seven hundred thirty-eight".