365778089 has 4 divisors (see below), whose sum is σ = 366497220. Its totient is φ = 365058960.

The previous prime is 365778067. The next prime is 365778121. The reversal of 365778089 is 980877563.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 980877563 = 41 ⋅23923843.

It can be written as a sum of positive squares in 2 ways, for example, as 249892864 + 115885225 = 15808^2 + 10765^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-365778089 is a prime.

It is a super-2 number, since 2×365778089² = 267587220784983842, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 365778089.

It is not an unprimeable number, because it can be changed into a prime (365778059) 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, 358802 + ... + 359819.

It is an arithmetic number, because the mean of its divisors is an integer number (91624305).

Almost surely, 2^365778089 is an apocalyptic number.

It is an amenable number.

365778089 is a deficient number, since it is larger than the sum of its proper divisors (719131).

365778089 is an equidigital number, since it uses as much as digits as its factorization.

365778089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 719130.

The product of its (nonzero) digits is 2540160, while the sum is 53.

The square root of 365778089 is about 19125.3258534332. The cubic root of 365778089 is about 715.1644129380.

The spelling of 365778089 in words is "three hundred sixty-five million, seven hundred seventy-eight thousand, eighty-nine".