1401061988 has 24 divisors (see below), whose sum is σ = 2536257024. Its totient is φ = 676512000.

The previous prime is 1401061979. The next prime is 1401061999. The reversal of 1401061988 is 8891601041.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48788 + ... + 71988.

It is an arithmetic number, because the mean of its divisors is an integer number (105677376).

Almost surely, 2^1401061988 is an apocalyptic number.

It is an amenable number.

1401061988 is a deficient number, since it is larger than the sum of its proper divisors (1135195036).

1401061988 is a wasteful number, since it uses less digits than its factorization.

1401061988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23723 (or 23721 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 38.

The square root of 1401061988 is about 37430.7625890791. The cubic root of 1401061988 is about 1118.9717358812.

The spelling of 1401061988 in words is "one billion, four hundred one million, sixty-one thousand, nine hundred eighty-eight".