1089418977 has 10 divisors (see below), whose sum is σ = 1627403778. Its totient is φ = 726279264.

The previous prime is 1089418963. The next prime is 1089418987. The reversal of 1089418977 is 7798149801.

It can be written as a sum of positive squares in only one way, i.e., 790509456 + 298909521 = 28116^2 + 17289^2 .

It is not a de Polignac number, because 1089418977 - 2⁴ = 1089418961 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1089418987) 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, 6724728 + ... + 6724889.

Almost surely, 2^1089418977 is an apocalyptic number.

It is an amenable number.

1089418977 is a deficient number, since it is larger than the sum of its proper divisors (537984801).

1089418977 is an equidigital number, since it uses as much as digits as its factorization.

1089418977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13449629 (or 13449620 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 54.

The square root of 1089418977 is about 33006.3475258927. The cubic root of 1089418977 is about 1028.9595730788.

The spelling of 1089418977 in words is "one billion, eighty-nine million, four hundred eighteen thousand, nine hundred seventy-seven".