1601404156 has 24 divisors (see below), whose sum is σ = 3058352640. Its totient is φ = 727642800.

The previous prime is 1601404109. The next prime is 1601404193. The reversal of 1601404156 is 6514041061.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 161461 + ... + 171091.

It is an arithmetic number, because the mean of its divisors is an integer number (127431360).

Almost surely, 2^1601404156 is an apocalyptic number.

It is an amenable number.

1601404156 is a deficient number, since it is larger than the sum of its proper divisors (1456948484).

1601404156 is a wasteful number, since it uses less digits than its factorization.

1601404156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13425 (or 13423 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 1601404156 is about 40017.5481008020. The cubic root of 1601404156 is about 1169.9491433321.

The spelling of 1601404156 in words is "one billion, six hundred one million, four hundred four thousand, one hundred fifty-six".