1013409978 has 32 divisors (see below), whose sum is σ = 2320097280. Its totient is φ = 289079280.

The previous prime is 1013409977. The next prime is 1013410003. The reversal of 1013409978 is 8799043101.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (1013409977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7383 + ... + 45621.

It is an arithmetic number, because the mean of its divisors is an integer number (72503040).

Almost surely, 2^1013409978 is an apocalyptic number.

1013409978 is an abundant number, since it is smaller than the sum of its proper divisors (1306687302).

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

1013409978 is a wasteful number, since it uses less digits than its factorization.

1013409978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38882.

The product of its (nonzero) digits is 54432, while the sum is 42.

The square root of 1013409978 is about 31834.1008668378. The cubic root of 1013409978 is about 1004.4501593714.

The spelling of 1013409978 in words is "one billion, thirteen million, four hundred nine thousand, nine hundred seventy-eight".