1965975167 has 12 divisors (see below), whose sum is σ = 2154434520. Its totient is φ = 1782873600.

The previous prime is 1965975157. The next prime is 1965975197. The reversal of 1965975167 is 7615795691.

It is not a de Polignac number, because 1965975167 - 2⁶ = 1965975103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1965975127) 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, 1227167 + ... + 1228767.

It is an arithmetic number, because the mean of its divisors is an integer number (179536210).

Almost surely, 2^1965975167 is an apocalyptic number.

1965975167 is a deficient number, since it is larger than the sum of its proper divisors (188459353).

1965975167 is an frugal number, since it uses more digits than its factorization.

1965975167 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3274 (or 1673 counting only the distinct ones).

The product of its digits is 3572100, while the sum is 56.

The square root of 1965975167 is about 44339.3185220522. The cubic root of 1965975167 is about 1252.7353787562.

The spelling of 1965975167 in words is "one billion, nine hundred sixty-five million, nine hundred seventy-five thousand, one hundred sixty-seven".