1604099378 has 48 divisors (see below), whose sum is σ = 2912920704. Its totient is φ = 660048480.

The previous prime is 1604099353. The next prime is 1604099383. The reversal of 1604099378 is 8739904061.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 240833 + ... + 247403.

It is an arithmetic number, because the mean of its divisors is an integer number (60685848).

Almost surely, 2^1604099378 is an apocalyptic number.

1604099378 is a deficient number, since it is larger than the sum of its proper divisors (1308821326).

1604099378 is a wasteful number, since it uses less digits than its factorization.

1604099378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6687 (or 6680 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 47.

The square root of 1604099378 is about 40051.2094449094. The cubic root of 1604099378 is about 1170.6051312424.

The spelling of 1604099378 in words is "one billion, six hundred four million, ninety-nine thousand, three hundred seventy-eight".