1361440478 has 32 divisors (see below), whose sum is σ = 2308227840. Its totient is φ = 598389120.

The previous prime is 1361440477. The next prime is 1361440481. The reversal of 1361440478 is 8740441631.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1361440477) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31025 + ... + 60707.

It is an arithmetic number, because the mean of its divisors is an integer number (72132120).

Almost surely, 2^1361440478 is an apocalyptic number.

1361440478 is a deficient number, since it is larger than the sum of its proper divisors (946787362).

1361440478 is a wasteful number, since it uses less digits than its factorization.

1361440478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29792.

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 1361440478 is about 36897.7028824289. The cubic root of 1361440478 is about 1108.3226778305.

The spelling of 1361440478 in words is "one billion, three hundred sixty-one million, four hundred forty thousand, four hundred seventy-eight".