1402694387798 has 32 divisors (see below), whose sum is σ = 2399352606720. Its totient is φ = 609210576000.

The previous prime is 1402694387729. The next prime is 1402694387803. The reversal of 1402694387798 is 8977834962041.

It is a super-2 number, since 2×1402694387798² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

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 15 ways as a sum of consecutive naturals, for example, 12963443 + ... + 13071198.

It is an arithmetic number, because the mean of its divisors is an integer number (74979768960).

Almost surely, 2^{1402694387798} is an apocalyptic number.

1402694387798 is a deficient number, since it is larger than the sum of its proper divisors (996658218922).

1402694387798 is a wasteful number, since it uses less digits than its factorization.

1402694387798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26034764.

The product of its (nonzero) digits is 146313216, while the sum is 68.

The spelling of 1402694387798 in words is "one trillion, four hundred two billion, six hundred ninety-four million, three hundred eighty-seven thousand, seven hundred ninety-eight".