1987356974 has 4 divisors (see below), whose sum is σ = 2981035464. Its totient is φ = 993678486.

The previous prime is 1987356949. The next prime is 1987357039. The reversal of 1987356974 is 4796537891.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 496839242 + ... + 496839245.

It is an arithmetic number, because the mean of its divisors is an integer number (745258866).

Almost surely, 2^1987356974 is an apocalyptic number.

1987356974 is a deficient number, since it is larger than the sum of its proper divisors (993678490).

1987356974 is an equidigital number, since it uses as much as digits as its factorization.

1987356974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 993678489.

The product of its digits is 11430720, while the sum is 59.

The square root of 1987356974 is about 44579.7821214954. The cubic root of 1987356974 is about 1257.2605668031.

The spelling of 1987356974 in words is "one billion, nine hundred eighty-seven million, three hundred fifty-six thousand, nine hundred seventy-four".