378153897 has 16 divisors (see below), whose sum is σ = 550502400. Its totient is φ = 228992400.

The previous prime is 378153871. The next prime is 378153907. The reversal of 378153897 is 798351873.

It is not a de Polignac number, because 378153897 - 2¹⁵ = 378121129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (378153847) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42072 + ... + 50262.

It is an arithmetic number, because the mean of its divisors is an integer number (34406400).

Almost surely, 2^378153897 is an apocalyptic number.

It is an amenable number.

378153897 is a deficient number, since it is larger than the sum of its proper divisors (172348503).

378153897 is a wasteful number, since it uses less digits than its factorization.

378153897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9604.

The product of its digits is 1270080, while the sum is 51.

The square root of 378153897 is about 19446.1794962404. The cubic root of 378153897 is about 723.1407912468.

The spelling of 378153897 in words is "three hundred seventy-eight million, one hundred fifty-three thousand, eight hundred ninety-seven".