1987373158 has 8 divisors (see below), whose sum is σ = 2981438928. Its totient is φ = 993560184.

The previous prime is 1987373147. The next prime is 1987373159. The reversal of 1987373158 is 8513737891.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1987373159) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 42141 + ... + 75832.

It is an arithmetic number, because the mean of its divisors is an integer number (372679866).

Almost surely, 2^1987373158 is an apocalyptic number.

1987373158 is a deficient number, since it is larger than the sum of its proper divisors (994065770).

1987373158 is a wasteful number, since it uses less digits than its factorization.

1987373158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126398.

The product of its digits is 1270080, while the sum is 52.

The square root of 1987373158 is about 44579.9636383880. The cubic root of 1987373158 is about 1257.2639796189.

The spelling of 1987373158 in words is "one billion, nine hundred eighty-seven million, three hundred seventy-three thousand, one hundred fifty-eight".