2987861194 has 4 divisors (see below), whose sum is σ = 4481791794. Its totient is φ = 1493930596.

The previous prime is 2987861159. The next prime is 2987861203. The reversal of 2987861194 is 4911687892.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 2531397969 + 456463225 = 50313^2 + 21365^2 .

It is a super-2 number, since 2×2987861194² = 17854629029222211272, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 746965297 + ... + 746965300.

Almost surely, 2^2987861194 is an apocalyptic number.

2987861194 is a deficient number, since it is larger than the sum of its proper divisors (1493930600).

2987861194 is a wasteful number, since it uses less digits than its factorization.

2987861194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1493930599.

The product of its digits is 1741824, while the sum is 55.

The square root of 2987861194 is about 54661.3317986307. The cubic root of 2987861194 is about 1440.3016976530.

The spelling of 2987861194 in words is "two billion, nine hundred eighty-seven million, eight hundred sixty-one thousand, one hundred ninety-four".