3780028365 has 16 divisors (see below), whose sum is σ = 6073146816. Its totient is φ = 2007648000.

The previous prime is 3780028363. The next prime is 3780028367. The reversal of 3780028365 is 5638200873.

It is an interprime number because it is at equal distance from previous prime (3780028363) and next prime (3780028367).

It is not a de Polignac number, because 3780028365 - 2¹ = 3780028363 is a prime.

It is a super-2 number, since 2×3780028365² = 28577228880409146450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3780028363) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 519211 + ... + 526440.

It is an arithmetic number, because the mean of its divisors is an integer number (379571676).

Almost surely, 2^3780028365 is an apocalyptic number.

It is an amenable number.

3780028365 is a deficient number, since it is larger than the sum of its proper divisors (2293118451).

3780028365 is a wasteful number, since it uses less digits than its factorization.

3780028365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1045900.

The product of its (nonzero) digits is 241920, while the sum is 42.

The square root of 3780028365 is about 61481.9352737046. The cubic root of 3780028365 is about 1557.7521269767.

The spelling of 3780028365 in words is "three billion, seven hundred eighty million, twenty-eight thousand, three hundred sixty-five".