1115690478 has 16 divisors (see below), whose sum is σ = 2550149760. Its totient is φ = 318768696.

The previous prime is 1115690453. The next prime is 1115690491. The reversal of 1115690478 is 8740965111.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 26564059 = 1115690478 / (1 + 1 + 1 + 5 + 6 + 9 + 0 + 4 + 7 + 8).

It is a congruent number.

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, 13281988 + ... + 13282071.

It is an arithmetic number, because the mean of its divisors is an integer number (159384360).

Almost surely, 2^1115690478 is an apocalyptic number.

1115690478 is an abundant number, since it is smaller than the sum of its proper divisors (1434459282).

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

1115690478 is a wasteful number, since it uses less digits than its factorization.

1115690478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26564071.

The product of its (nonzero) digits is 60480, while the sum is 42.

The square root of 1115690478 is about 33401.9532063620. The cubic root of 1115690478 is about 1037.1651340643.

The spelling of 1115690478 in words is "one billion, one hundred fifteen million, six hundred ninety thousand, four hundred seventy-eight".