1987449696 has 60 divisors (see below), whose sum is σ = 5845041972. Its totient is φ = 662482368.

The previous prime is 1987449683. The next prime is 1987449697. The reversal of 1987449696 is 6969447891.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1987449697) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 380790 + ... + 385973.

Almost surely, 2^1987449696 is an apocalyptic number.

1987449696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1987449696 is an abundant number, since it is smaller than the sum of its proper divisors (3857592276).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1987449696 is an equidigital number, since it uses as much as digits as its factorization.

1987449696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 766785 (or 766768 counting only the distinct ones).

The product of its digits is 23514624, while the sum is 63.

The square root of 1987449696 is about 44580.8220650988. The cubic root of 1987449696 is about 1257.2801193886.

The spelling of 1987449696 in words is "one billion, nine hundred eighty-seven million, four hundred forty-nine thousand, six hundred ninety-six".