1986670742 has 32 divisors (see below), whose sum is σ = 3589850880. Its totient is φ = 805520160.

The previous prime is 1986670663. The next prime is 1986670757. The reversal of 1986670742 is 2470766891.

It is a super-3 number, since 3×1986670742³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 207317 + ... + 216687.

It is an arithmetic number, because the mean of its divisors is an integer number (112182840).

Almost surely, 2^1986670742 is an apocalyptic number.

1986670742 is a deficient number, since it is larger than the sum of its proper divisors (1603180138).

1986670742 is a wasteful number, since it uses less digits than its factorization.

1986670742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10196.

The product of its (nonzero) digits is 1016064, while the sum is 50.

The square root of 1986670742 is about 44572.0847840888. The cubic root of 1986670742 is about 1257.1158399509.

The spelling of 1986670742 in words is "one billion, nine hundred eighty-six million, six hundred seventy thousand, seven hundred forty-two".