1098977465 has 8 divisors (see below), whose sum is σ = 1331830728. Its totient is φ = 870476800.

The previous prime is 1098977449. The next prime is 1098977501. The reversal of 1098977465 is 5647798901.

1098977465 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 718454416 + 380523049 = 26804^2 + 19507^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1098977465 - 2⁴ = 1098977449 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1098977465.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1087592 + ... + 1088601.

It is an arithmetic number, because the mean of its divisors is an integer number (166478841).

Almost surely, 2^1098977465 is an apocalyptic number.

It is an amenable number.

1098977465 is a deficient number, since it is larger than the sum of its proper divisors (232853263).

1098977465 is a wasteful number, since it uses less digits than its factorization.

1098977465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2176299.

The product of its (nonzero) digits is 3810240, while the sum is 56.

The square root of 1098977465 is about 33150.8290243246. The cubic root of 1098977465 is about 1031.9601549151.

The spelling of 1098977465 in words is "one billion, ninety-eight million, nine hundred seventy-seven thousand, four hundred sixty-five".