381260986 has 4 divisors (see below), whose sum is σ = 571891482. Its totient is φ = 190630492.

The previous prime is 381260977. The next prime is 381260993. The reversal of 381260986 is 689062183.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 689062183 = 12853 ⋅53611.

It can be written as a sum of positive squares in only one way, i.e., 373223761 + 8037225 = 19319^2 + 2835^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95315245 + ... + 95315248.

Almost surely, 2^381260986 is an apocalyptic number.

381260986 is a deficient number, since it is larger than the sum of its proper divisors (190630496).

381260986 is a wasteful number, since it uses less digits than its factorization.

381260986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190630495.

The product of its (nonzero) digits is 124416, while the sum is 43.

The square root of 381260986 is about 19525.9055103726. The cubic root of 381260986 is about 725.1159456260.

The spelling of 381260986 in words is "three hundred eighty-one million, two hundred sixty thousand, nine hundred eighty-six".