1204778601 has 48 divisors (see below), whose sum is σ = 1937487552. Its totient is φ = 716688000.

The previous prime is 1204778599. The next prime is 1204778611. The reversal of 1204778601 is 1068774021.

1204778601 is a `hidden beast` number, since 1 + 2 + 0 + 47 + 7 + 8 + 601 = 666.

It is not a de Polignac number, because 1204778601 - 2¹ = 1204778599 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1204778611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 506946 + ... + 509316.

It is an arithmetic number, because the mean of its divisors is an integer number (40364324).

Almost surely, 2^1204778601 is an apocalyptic number.

It is an amenable number.

1204778601 is a deficient number, since it is larger than the sum of its proper divisors (732708951).

1204778601 is a wasteful number, since it uses less digits than its factorization.

1204778601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2534 (or 2531 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 36.

The square root of 1204778601 is about 34709.9207864265. The cubic root of 1204778601 is about 1064.0672624225.

The spelling of 1204778601 in words is "one billion, two hundred four million, seven hundred seventy-eight thousand, six hundred one".