378763769 has 4 divisors (see below), whose sum is σ = 380273040. Its totient is φ = 377254500.

The previous prime is 378763753. The next prime is 378763799. The reversal of 378763769 is 967367873.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 967367873 = 647 ⋅1495159.

It is a cyclic number.

It is not a de Polignac number, because 378763769 - 2⁴ = 378763753 is a prime.

It is a super-2 number, since 2×378763769² = 286923985414170722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (378763729) 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, 754259 + ... + 754760.

It is an arithmetic number, because the mean of its divisors is an integer number (95068260).

Almost surely, 2^378763769 is an apocalyptic number.

It is an amenable number.

378763769 is a deficient number, since it is larger than the sum of its proper divisors (1509271).

378763769 is a wasteful number, since it uses less digits than its factorization.

378763769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1509270.

The product of its digits is 8001504, while the sum is 56.

The square root of 378763769 is about 19461.8542025163. The cubic root of 378763769 is about 723.5293336258.

It can be divided in two parts, 3787637 and 69, that multiplied together give a triangular number (261346953 = T₂₂₈₆₂).

The spelling of 378763769 in words is "three hundred seventy-eight million, seven hundred sixty-three thousand, seven hundred sixty-nine".