978098451 has 16 divisors (see below), whose sum is σ = 1506377088. Its totient is φ = 557916800.

The previous prime is 978098377. The next prime is 978098467. The reversal of 978098451 is 154890879.

It is a cyclic number.

It is not a de Polignac number, because 978098451 - 2⁷ = 978098323 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a junction number, because it is equal to n+sod(n) for n = 978098394 and 978098403.

It is not an unprimeable number, because it can be changed into a prime (978098651) 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, 871185 + ... + 872306.

It is an arithmetic number, because the mean of its divisors is an integer number (94148568).

Almost surely, 2^978098451 is an apocalyptic number.

978098451 is a deficient number, since it is larger than the sum of its proper divisors (528278637).

978098451 is a wasteful number, since it uses less digits than its factorization.

978098451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1743522.

The product of its (nonzero) digits is 725760, while the sum is 51.

The square root of 978098451 is about 31274.5655605318. The cubic root of 978098451 is about 992.6455280052.

The spelling of 978098451 in words is "nine hundred seventy-eight million, ninety-eight thousand, four hundred fifty-one".