9198413978 has 16 divisors (see below), whose sum is σ = 14958707400. Its totient is φ = 4216927296.

The previous prime is 9198413927. The next prime is 9198414011. The reversal of 9198413978 is 8793148919.

It can be written as a sum of positive squares in 4 ways, for example, as 2067793729 + 7130620249 = 45473^2 + 84443^2 .

It is a super-2 number, since 2×9198413978² (a number of 21 digits) contains 22 as substring.

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, 1183325 + ... + 1191072.

Almost surely, 2^9198413978 is an apocalyptic number.

9198413978 is a deficient number, since it is larger than the sum of its proper divisors (5760293422).

9198413978 is a wasteful number, since it uses less digits than its factorization.

9198413978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2374561.

The product of its digits is 3919104, while the sum is 59.

The square root of 9198413978 is about 95908.3623986981. The cubic root of 9198413978 is about 2095.2586893740.

The spelling of 9198413978 in words is "nine billion, one hundred ninety-eight million, four hundred thirteen thousand, nine hundred seventy-eight".