1198940156598 has 32 divisors (see below), whose sum is σ = 2468181786624. Its totient is φ = 388063714752.

The previous prime is 1198940156591. The next prime is 1198940156653. The reversal of 1198940156598 is 8956510498911.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1198940156591) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16702615 + ... + 16774242.

It is an arithmetic number, because the mean of its divisors is an integer number (77130680832).

Almost surely, 2^{1198940156598} is an apocalyptic number.

1198940156598 is an abundant number, since it is smaller than the sum of its proper divisors (1269241630026).

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

1198940156598 is a wasteful number, since it uses less digits than its factorization.

1198940156598 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33477036.

The product of its (nonzero) digits is 27993600, while the sum is 66.

The spelling of 1198940156598 in words is "one trillion, one hundred ninety-eight billion, nine hundred forty million, one hundred fifty-six thousand, five hundred ninety-eight".