1402109691 has 8 divisors (see below), whose sum is σ = 1871314704. Its totient is φ = 933822240.

The previous prime is 1402109659. The next prime is 1402109701. The reversal of 1402109691 is 1969012041.

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

It is not a de Polignac number, because 1402109691 - 2⁵ = 1402109659 is a prime.

It is a super-2 number, since 2×1402109691² = 3931823171192230962, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1402109791) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 225816 + ... + 231941.

It is an arithmetic number, because the mean of its divisors is an integer number (233914338).

Almost surely, 2^1402109691 is an apocalyptic number.

1402109691 is a deficient number, since it is larger than the sum of its proper divisors (469205013).

1402109691 is a wasteful number, since it uses less digits than its factorization.

1402109691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458781.

The product of its (nonzero) digits is 3888, while the sum is 33.

The square root of 1402109691 is about 37444.7551868082. The cubic root of 1402109691 is about 1119.2505857706.

The spelling of 1402109691 in words is "one billion, four hundred two million, one hundred nine thousand, six hundred ninety-one".