7902198036 has 36 divisors (see below), whose sum is σ = 19978614292. Its totient is φ = 2633589504.

The previous prime is 7902198001. The next prime is 7902198037. The reversal of 7902198036 is 6308912097.

It can be written as a sum of positive squares in 2 ways, for example, as 1428386436 + 6473811600 = 37794^2 + 80460^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-3 number, since 3×7902198036³ (a number of 31 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7902197982 and 7902198000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7902198037) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 222396 + ... + 255468.

Almost surely, 2^7902198036 is an apocalyptic number.

It is an amenable number.

7902198036 is an abundant number, since it is smaller than the sum of its proper divisors (12076416256).

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

7902198036 is a wasteful number, since it uses less digits than its factorization.

7902198036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39720 (or 39715 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The square root of 7902198036 is about 88894.3082317423. The cubic root of 7902198036 is about 1991.8163963210.

The spelling of 7902198036 in words is "seven billion, nine hundred two million, one hundred ninety-eight thousand, thirty-six".