1988973461 has 8 divisors (see below), whose sum is σ = 2077176960. Its totient is φ = 1900913872.

The previous prime is 1988973451. The next prime is 1988973473. The reversal of 1988973461 is 1643798891.

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

It is a cyclic number.

It is not a de Polignac number, because 1988973461 - 2⁶ = 1988973397 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1988973397 and 1988973406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1988973431) 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 7 ways as a sum of consecutive naturals, for example, 7226 + ... + 63483.

It is an arithmetic number, because the mean of its divisors is an integer number (259647120).

Almost surely, 2^1988973461 is an apocalyptic number.

It is an amenable number.

1988973461 is a deficient number, since it is larger than the sum of its proper divisors (88203499).

1988973461 is a wasteful number, since it uses less digits than its factorization.

1988973461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71955.

The product of its digits is 2612736, while the sum is 56.

The square root of 1988973461 is about 44597.9087065750. The cubic root of 1988973461 is about 1257.6013535215.

The spelling of 1988973461 in words is "one billion, nine hundred eighty-eight million, nine hundred seventy-three thousand, four hundred sixty-one".