378925157 has 8 divisors (see below), whose sum is σ = 418026840. Its totient is φ = 341245440.

The previous prime is 378925153. The next prime is 378925163. The reversal of 378925157 is 751529873.

It is a Cunningham number, because it is equal to 19466²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 18267076 + 360658081 = 4274^2 + 18991^2 .

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 378925157 - 2² = 378925153 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378925153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 354932 + ... + 355997.

It is an arithmetic number, because the mean of its divisors is an integer number (52253355).

Almost surely, 2^378925157 is an apocalyptic number.

It is an amenable number.

378925157 is a deficient number, since it is larger than the sum of its proper divisors (39101683).

378925157 is a wasteful number, since it uses less digits than its factorization.

378925157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 710983.

The product of its digits is 529200, while the sum is 47.

The square root of 378925157 is about 19466.0000256858. Note that the first 4 decimals coincide. The cubic root of 378925157 is about 723.6320822525.

The spelling of 378925157 in words is "three hundred seventy-eight million, nine hundred twenty-five thousand, one hundred fifty-seven".