1986274 has 4 divisors (see below), whose sum is σ = 2979414. Its totient is φ = 993136.

The previous prime is 1986253. The next prime is 1986277. The reversal of 1986274 is 4726891.

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., 1729225 + 257049 = 1315^2 + 507^2 .

It is not an unprimeable number, because it can be changed into a prime (1986277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 496567 + ... + 496570.

2^1986274 is an apocalyptic number.

1986274 is a deficient number, since it is larger than the sum of its proper divisors (993140).

1986274 is an equidigital number, since it uses as much as digits as its factorization.

1986274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 993139.

The product of its digits is 24192, while the sum is 37.

The square root of 1986274 is about 1409.3523335206. The cubic root of 1986274 is about 125.7032151556.

The spelling of 1986274 in words is "one million, nine hundred eighty-six thousand, two hundred seventy-four".