386149873 has 2 divisors, whose sum is σ = 386149874. Its totient is φ = 386149872.

The previous prime is 386149861. The next prime is 386149903. The reversal of 386149873 is 378941683.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 385415424 + 734449 = 19632^2 + 857^2 .

It is a cyclic number.

It is not a de Polignac number, because 386149873 - 2¹³ = 386141681 is a prime.

It is a super-2 number, since 2×386149873² = 298223448835832258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (386149843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193074936 + 193074937.

It is an arithmetic number, because the mean of its divisors is an integer number (193074937).

Almost surely, 2^386149873 is an apocalyptic number.

It is an amenable number.

386149873 is a deficient number, since it is larger than the sum of its proper divisors (1).

386149873 is an equidigital number, since it uses as much as digits as its factorization.

386149873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 870912, while the sum is 49.

The square root of 386149873 is about 19650.6965016510. The cubic root of 386149873 is about 728.2021644242.

The spelling of 386149873 in words is "three hundred eighty-six million, one hundred forty-nine thousand, eight hundred seventy-three".