378720955 has 8 divisors (see below), whose sum is σ = 469125504. Its totient is φ = 293203200.

The previous prime is 378720943. The next prime is 378720983. The reversal of 378720955 is 559027873.

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

It is not a de Polignac number, because 378720955 - 2²¹ = 376623803 is a prime.

It is a super-2 number, since 2×378720955² = 286859123512224050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1221526 + ... + 1221835.

It is an arithmetic number, because the mean of its divisors is an integer number (58640688).

Almost surely, 2^378720955 is an apocalyptic number.

378720955 is a deficient number, since it is larger than the sum of its proper divisors (90404549).

378720955 is a wasteful number, since it uses less digits than its factorization.

378720955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2443397.

The product of its (nonzero) digits is 529200, while the sum is 46.

The square root of 378720955 is about 19460.7542248496. The cubic root of 378720955 is about 723.5020709407.

It can be divided in two parts, 3787 and 20955, that added together give a palindrome (24742).

The spelling of 378720955 in words is "three hundred seventy-eight million, seven hundred twenty thousand, nine hundred fifty-five".