1146821478 has 32 divisors (see below), whose sum is σ = 2514758400. Its totient is φ = 345771360.

The previous prime is 1146821461. The next prime is 1146821483. The reversal of 1146821478 is 8741286411.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30525 + ... + 56792.

It is an arithmetic number, because the mean of its divisors is an integer number (78586200).

Almost surely, 2^1146821478 is an apocalyptic number.

1146821478 is an abundant number, since it is smaller than the sum of its proper divisors (1367936922).

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

1146821478 is a wasteful number, since it uses less digits than its factorization.

1146821478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87532.

The product of its digits is 86016, while the sum is 42.

The square root of 1146821478 is about 33864.7527379132. The cubic root of 1146821478 is about 1046.7234148892.

The spelling of 1146821478 in words is "one billion, one hundred forty-six million, eight hundred twenty-one thousand, four hundred seventy-eight".