385916451 has 4 divisors (see below), whose sum is σ = 514555272. Its totient is φ = 257277632.

The previous prime is 385916423. The next prime is 385916513. The reversal of 385916451 is 154619583.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 385916451 - 2⁶ = 385916387 is a prime.

It is not an unprimeable number, because it can be changed into a prime (385916351) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64319406 + ... + 64319411.

It is an arithmetic number, because the mean of its divisors is an integer number (128638818).

Almost surely, 2^385916451 is an apocalyptic number.

385916451 is a deficient number, since it is larger than the sum of its proper divisors (128638821).

385916451 is a wasteful number, since it uses less digits than its factorization.

385916451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128638820.

The product of its digits is 129600, while the sum is 42.

The square root of 385916451 is about 19644.7563232533. The cubic root of 385916451 is about 728.0554056320.

The spelling of 385916451 in words is "three hundred eighty-five million, nine hundred sixteen thousand, four hundred fifty-one".