1986738364 has 12 divisors (see below), whose sum is σ = 3744237784. Its totient is φ = 916956144.

The previous prime is 1986738319. The next prime is 1986738389. The reversal of 1986738364 is 4638376891.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19103202 + ... + 19103305.

Almost surely, 2^1986738364 is an apocalyptic number.

It is an amenable number.

1986738364 is a deficient number, since it is larger than the sum of its proper divisors (1757499420).

1986738364 is a wasteful number, since it uses less digits than its factorization.

1986738364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38206524 (or 38206522 counting only the distinct ones).

The product of its digits is 5225472, while the sum is 55.

The square root of 1986738364 is about 44572.8433465939. The cubic root of 1986738364 is about 1257.1301029624.

The spelling of 1986738364 in words is "one billion, nine hundred eighty-six million, seven hundred thirty-eight thousand, three hundred sixty-four".