1078638615 has 96 divisors (see below), whose sum is σ = 2016705600. Its totient is φ = 532224000.

The previous prime is 1078638601. The next prime is 1078638629. The reversal of 1078638615 is 5168368701.

1078638615 is a `hidden beast` number, since 1 + 0 + 7 + 8 + 638 + 6 + 1 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (1078638601) and next prime (1078638629).

It is not a de Polignac number, because 1078638615 - 2⁶ = 1078638551 is a prime.

It is a super-2 number, since 2×1078638615² = 2326922523538236450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4297240 + ... + 4297490.

It is an arithmetic number, because the mean of its divisors is an integer number (21007350).

Almost surely, 2^1078638615 is an apocalyptic number.

1078638615 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1078638615 is a deficient number, since it is larger than the sum of its proper divisors (938066985).

1078638615 is a wasteful number, since it uses less digits than its factorization.

1078638615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417 (or 414 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 1078638615 is about 32842.6341056865. The cubic root of 1078638615 is about 1025.5542875536.

The spelling of 1078638615 in words is "one billion, seventy-eight million, six hundred thirty-eight thousand, six hundred fifteen".