981418740 has 48 divisors (see below), whose sum is σ = 2867453568. Its totient is φ = 250332544.

The previous prime is 981418727. The next prime is 981418741. The reversal of 981418740 is 47814189.

It is a junction number, because it is equal to n+sod(n) for n = 981418692 and 981418701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (981418741) 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, 354207 + ... + 356966.

It is an arithmetic number, because the mean of its divisors is an integer number (59738616).

Almost surely, 2^981418740 is an apocalyptic number.

It is an amenable number.

981418740 is an abundant number, since it is smaller than the sum of its proper divisors (1886034828).

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

981418740 is a wasteful number, since it uses less digits than its factorization.

981418740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 711208 (or 711206 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 42.

The square root of 981418740 is about 31327.6034831903. The cubic root of 981418740 is about 993.7674830989.

The spelling of 981418740 in words is "nine hundred eighty-one million, four hundred eighteen thousand, seven hundred forty".