981058878 has 20 divisors (see below), whose sum is σ = 2198298960. Its totient is φ = 327019572.

The previous prime is 981058877. The next prime is 981058879. The reversal of 981058878 is 878850189.

It is an interprime number because it is at equal distance from previous prime (981058877) and next prime (981058879).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (981058877) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 3027798 + ... + 3028121.

It is an arithmetic number, because the mean of its divisors is an integer number (109914948).

Almost surely, 2^981058878 is an apocalyptic number.

981058878 is an abundant number, since it is smaller than the sum of its proper divisors (1217240082).

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

981058878 is a wasteful number, since it uses less digits than its factorization.

981058878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6055933 (or 6055924 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 54.

The square root of 981058878 is about 31321.8594275627. The cubic root of 981058878 is about 993.6460049237.

The spelling of 981058878 in words is "nine hundred eighty-one million, fifty-eight thousand, eight hundred seventy-eight".