3660378731 has 2 divisors, whose sum is σ = 3660378732. Its totient is φ = 3660378730.

The previous prime is 3660378727. The next prime is 3660378751. The reversal of 3660378731 is 1378730663.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3660378731 - 2² = 3660378727 is a prime.

It is a super-2 number, since 2×3660378731² = 26796744908714340722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3660378721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1830189365 + 1830189366.

It is an arithmetic number, because the mean of its divisors is an integer number (1830189366).

Almost surely, 2^3660378731 is an apocalyptic number.

3660378731 is a deficient number, since it is larger than the sum of its proper divisors (1).

3660378731 is an equidigital number, since it uses as much as digits as its factorization.

3660378731 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 381024, while the sum is 44.

The square root of 3660378731 is about 60501.0638832079. The cubic root of 3660378731 is about 1541.1396987323.

The spelling of 3660378731 in words is "three billion, six hundred sixty million, three hundred seventy-eight thousand, seven hundred thirty-one".