1252377919 has 4 divisors (see below), whose sum is σ = 1348714696. Its totient is φ = 1156041144.

The previous prime is 1252377911. The next prime is 1252377977. The reversal of 1252377919 is 9197732521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9197732521 = 263 ⋅34972367.

It is a cyclic number.

It is not a de Polignac number, because 1252377919 - 2³ = 1252377911 is a prime.

It is a super-2 number, since 2×1252377919² = 3136900903997541122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1252377911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48168369 + ... + 48168394.

It is an arithmetic number, because the mean of its divisors is an integer number (337178674).

Almost surely, 2^1252377919 is an apocalyptic number.

1252377919 is a deficient number, since it is larger than the sum of its proper divisors (96336777).

1252377919 is an equidigital number, since it uses as much as digits as its factorization.

1252377919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96336776.

The product of its digits is 238140, while the sum is 46.

The square root of 1252377919 is about 35388.9519341842. The cubic root of 1252377919 is about 1077.8999884844.

The spelling of 1252377919 in words is "one billion, two hundred fifty-two million, three hundred seventy-seven thousand, nine hundred nineteen".