1123790478 has 16 divisors (see below), whose sum is σ = 2257398480. Its totient is φ = 372960576.

The previous prime is 1123790477. The next prime is 1123790483. The reversal of 1123790478 is 8740973211.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123790477) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 407575 + ... + 410322.

It is an arithmetic number, because the mean of its divisors is an integer number (141087405).

Almost surely, 2^1123790478 is an apocalyptic number.

1123790478 is an abundant number, since it is smaller than the sum of its proper divisors (1133608002).

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

1123790478 is a wasteful number, since it uses less digits than its factorization.

1123790478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 818131.

The product of its (nonzero) digits is 84672, while the sum is 42.

The square root of 1123790478 is about 33522.9843241917. The cubic root of 1123790478 is about 1039.6690508848.

The spelling of 1123790478 in words is "one billion, one hundred twenty-three million, seven hundred ninety thousand, four hundred seventy-eight".