369641778 has 64 divisors (see below), whose sum is σ = 865821312. Its totient is φ = 103956480.

The previous prime is 369641759. The next prime is 369641813. The reversal of 369641778 is 877146963.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a self number, because there is not a number n which added to its sum of digits gives 369641778.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 79650 + ... + 84162.

It is an arithmetic number, because the mean of its divisors is an integer number (13528458).

Almost surely, 2^369641778 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 369641778, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (432910656).

369641778 is an abundant number, since it is smaller than the sum of its proper divisors (496179534).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

369641778 is a wasteful number, since it uses less digits than its factorization.

369641778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4619.

The product of its digits is 1524096, while the sum is 51.

The square root of 369641778 is about 19226.0702692984. The cubic root of 369641778 is about 717.6736761439.

The spelling of 369641778 in words is "three hundred sixty-nine million, six hundred forty-one thousand, seven hundred seventy-eight".