1986453950 has 24 divisors (see below), whose sum is σ = 3979021368. Its totient is φ = 733459680.

The previous prime is 1986453947. The next prime is 1986454003. The reversal of 1986453950 is 593546891.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1527392 + ... + 1528691.

It is an arithmetic number, because the mean of its divisors is an integer number (165792557).

Almost surely, 2^1986453950 is an apocalyptic number.

1986453950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1986453950 is an abundant number, since it is smaller than the sum of its proper divisors (1992567418).

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

1986453950 is a wasteful number, since it uses less digits than its factorization.

1986453950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3056108 (or 3056103 counting only the distinct ones).

The product of its (nonzero) digits is 1166400, while the sum is 50.

The square root of 1986453950 is about 44569.6527920064. The cubic root of 1986453950 is about 1257.0701114254.

The spelling of 1986453950 in words is "one billion, nine hundred eighty-six million, four hundred fifty-three thousand, nine hundred fifty".