980643451 has 4 divisors (see below), whose sum is σ = 983315872. Its totient is φ = 977971032.

The previous prime is 980643437. The next prime is 980643463. The reversal of 980643451 is 154346089.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-980643451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (980643401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1335660 + ... + 1336393.

It is an arithmetic number, because the mean of its divisors is an integer number (245828968).

Almost surely, 2^980643451 is an apocalyptic number.

980643451 is a deficient number, since it is larger than the sum of its proper divisors (2672421).

980643451 is a wasteful number, since it uses less digits than its factorization.

980643451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2672420.

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 980643451 is about 31315.2271427176. The cubic root of 980643451 is about 993.5057327931.

The spelling of 980643451 in words is "nine hundred eighty million, six hundred forty-three thousand, four hundred fifty-one".