1959640067 has 32 divisors (see below), whose sum is σ = 2491650048. Its totient is φ = 1496880000.

The previous prime is 1959640063. The next prime is 1959640091. The reversal of 1959640067 is 7600469591.

It is not a de Polignac number, because 1959640067 - 2² = 1959640063 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1959640063) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1976942 + ... + 1977932.

It is an arithmetic number, because the mean of its divisors is an integer number (77864064).

Almost surely, 2^1959640067 is an apocalyptic number.

1959640067 is a deficient number, since it is larger than the sum of its proper divisors (532009981).

1959640067 is a wasteful number, since it uses less digits than its factorization.

1959640067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1491.

The product of its (nonzero) digits is 408240, while the sum is 47.

The square root of 1959640067 is about 44267.8220268402. The cubic root of 1959640067 is about 1251.3883384023.

The spelling of 1959640067 in words is "one billion, nine hundred fifty-nine million, six hundred forty thousand, sixty-seven".