1264166067 has 4 divisors (see below), whose sum is σ = 1685554760. Its totient is φ = 842777376.

The previous prime is 1264166063. The next prime is 1264166069. The reversal of 1264166067 is 7606614621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7606614621 = 3 ⋅2535538207.

It is not a de Polignac number, because 1264166067 - 2² = 1264166063 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1264166063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 210694342 + ... + 210694347.

It is an arithmetic number, because the mean of its divisors is an integer number (421388690).

Almost surely, 2^1264166067 is an apocalyptic number.

1264166067 is a deficient number, since it is larger than the sum of its proper divisors (421388693).

1264166067 is an equidigital number, since it uses as much as digits as its factorization.

1264166067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421388692.

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 1264166067 is about 35555.1130922122. The cubic root of 1264166067 is about 1081.2713842452.

It can be divided in two parts, 1264 and 166067, that added together give a triangular number (167331 = T₅₇₈).

The spelling of 1264166067 in words is "one billion, two hundred sixty-four million, one hundred sixty-six thousand, sixty-seven".