1252767819 has 8 divisors (see below), whose sum is σ = 1693238992. Its totient is φ = 823737600.

The previous prime is 1252767767. The next prime is 1252767821. The reversal of 1252767819 is 9187672521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1252767819 - 2¹⁵ = 1252735051 is a prime.

It is a super-2 number, since 2×1252767819² = 3138854416644033522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1252767889) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2859982 + ... + 2860419.

It is an arithmetic number, because the mean of its divisors is an integer number (211654874).

Almost surely, 2^1252767819 is an apocalyptic number.

1252767819 is a deficient number, since it is larger than the sum of its proper divisors (440471173).

1252767819 is an equidigital number, since it uses as much as digits as its factorization.

1252767819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5720477.

The product of its digits is 423360, while the sum is 48.

The square root of 1252767819 is about 35394.4602868867. The cubic root of 1252767819 is about 1078.0118369375.

The spelling of 1252767819 in words is "one billion, two hundred fifty-two million, seven hundred sixty-seven thousand, eight hundred nineteen".