377991745 has 8 divisors (see below), whose sum is σ = 455356584. Its totient is φ = 301215744.

The previous prime is 377991743. The next prime is 377991791. The reversal of 377991745 is 547199773.

It can be written as a sum of positive squares in 4 ways, for example, as 26091664 + 351900081 = 5108^2 + 18759^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 377991745 - 2¹ = 377991743 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 377991692 and 377991701.

It is not an unprimeable number, because it can be changed into a prime (377991743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145794 + ... + 148363.

It is an arithmetic number, because the mean of its divisors is an integer number (56919573).

Almost surely, 2^377991745 is an apocalyptic number.

It is an amenable number.

377991745 is a deficient number, since it is larger than the sum of its proper divisors (77364839).

377991745 is a wasteful number, since it uses less digits than its factorization.

377991745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294419.

The product of its digits is 1666980, while the sum is 52.

The square root of 377991745 is about 19442.0097983722. The cubic root of 377991745 is about 723.0374157951.

The spelling of 377991745 in words is "three hundred seventy-seven million, nine hundred ninety-one thousand, seven hundred forty-five".