1601420156 has 18 divisors (see below), whose sum is σ = 3260034288. Its totient is φ = 686322840.

The previous prime is 1601420137. The next prime is 1601420173. The reversal of 1601420156 is 6510241061.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4085060 + ... + 4085451.

It is an arithmetic number, because the mean of its divisors is an integer number (181113016).

Almost surely, 2^1601420156 is an apocalyptic number.

It is an amenable number.

1601420156 is an abundant number, since it is smaller than the sum of its proper divisors (1658614132).

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

1601420156 is a wasteful number, since it uses less digits than its factorization.

1601420156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8170529 (or 8170520 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 1601420156 is about 40017.7480126006. The cubic root of 1601420156 is about 1169.9530397301.

The spelling of 1601420156 in words is "one billion, six hundred one million, four hundred twenty thousand, one hundred fifty-six".