378951793 has 6 divisors (see below), whose sum is σ = 416533922. Its totient is φ = 344501520.

The previous prime is 378951791. The next prime is 378951803. The reversal of 378951793 is 397159873.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 330621489 + 48330304 = 18183^2 + 6952^2 .

It is not a de Polignac number, because 378951793 - 2¹ = 378951791 is a prime.

It is a super-2 number, since 2×378951793² = 287208922835829698, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 378951793.

It is not an unprimeable number, because it can be changed into a prime (378951791) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1565796 + ... + 1566037.

Almost surely, 2^378951793 is an apocalyptic number.

It is an amenable number.

378951793 is a deficient number, since it is larger than the sum of its proper divisors (37582129).

378951793 is a wasteful number, since it uses less digits than its factorization.

378951793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3131855 (or 3131844 counting only the distinct ones).

The product of its digits is 1428840, while the sum is 52.

The square root of 378951793 is about 19466.6841809282. The cubic root of 378951793 is about 723.6490374147.

The spelling of 378951793 in words is "three hundred seventy-eight million, nine hundred fifty-one thousand, seven hundred ninety-three".