1967156401 has 12 divisors (see below), whose sum is σ = 2289192960. Its totient is φ = 1685494440.

The previous prime is 1967156369. The next prime is 1967156407. The reversal of 1967156401 is 1046517691.

It is not a de Polignac number, because 1967156401 - 2⁵ = 1967156369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1967156407) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 160240 + ... + 172078.

It is an arithmetic number, because the mean of its divisors is an integer number (190766080).

Almost surely, 2^1967156401 is an apocalyptic number.

It is an amenable number.

1967156401 is a deficient number, since it is larger than the sum of its proper divisors (322036559).

1967156401 is a wasteful number, since it uses less digits than its factorization.

1967156401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15244 (or 15237 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 40.

The square root of 1967156401 is about 44352.6369114622. The cubic root of 1967156401 is about 1252.9862258299.

The spelling of 1967156401 in words is "one billion, nine hundred sixty-seven million, one hundred fifty-six thousand, four hundred one".