1401876866 has 8 divisors (see below), whose sum is σ = 2264570364. Its totient is φ = 647020080.

The previous prime is 1401876851. The next prime is 1401876881. The reversal of 1401876866 is 6686781041.

It is an interprime number because it is at equal distance from previous prime (1401876851) and next prime (1401876881).

It can be written as a sum of positive squares in 2 ways, for example, as 1397189641 + 4687225 = 37379^2 + 2165^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 1401876866.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26959145 + ... + 26959196.

Almost surely, 2^1401876866 is an apocalyptic number.

1401876866 is a deficient number, since it is larger than the sum of its proper divisors (862693498).

1401876866 is a wasteful number, since it uses less digits than its factorization.

1401876866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53918356.

The product of its (nonzero) digits is 387072, while the sum is 47.

The square root of 1401876866 is about 37441.6461443671. The cubic root of 1401876866 is about 1119.1886305745.

The spelling of 1401876866 in words is "one billion, four hundred one million, eight hundred seventy-six thousand, eight hundred sixty-six".