18989750070 has 96 divisors (see below), whose sum is σ = 52089804000. Its totient is φ = 4786532352.

The previous prime is 18989750069. The next prime is 18989750071. The reversal of 18989750070 is 7005798981.

It is an interprime number because it is at equal distance from previous prime (18989750069) and next prime (18989750071).

It is a super-2 number, since 2×18989750070² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18989749989 and 18989750016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18989750071) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 755424 + ... + 780156.

It is an arithmetic number, because the mean of its divisors is an integer number (542602125).

Almost surely, 2^18989750070 is an apocalyptic number.

18989750070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 18989750070, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26044902000).

18989750070 is an abundant number, since it is smaller than the sum of its proper divisors (33100053930).

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

18989750070 is a wasteful number, since it uses less digits than its factorization.

18989750070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25214 (or 25211 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 54.

The spelling of 18989750070 in words is "eighteen billion, nine hundred eighty-nine million, seven hundred fifty thousand, seventy".