1394630691 has 16 divisors (see below), whose sum is σ = 1941698304. Its totient is φ = 888714464.

The previous prime is 1394630689. The next prime is 1394630701. The reversal of 1394630691 is 1960364931.

It is a cyclic number.

It is not a de Polignac number, because 1394630691 - 2¹ = 1394630689 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (1394630641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 106780 + ... + 119126.

It is an arithmetic number, because the mean of its divisors is an integer number (121356144).

Almost surely, 2^1394630691 is an apocalyptic number.

1394630691 is a deficient number, since it is larger than the sum of its proper divisors (547067613).

1394630691 is a wasteful number, since it uses less digits than its factorization.

1394630691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14010.

The product of its (nonzero) digits is 104976, while the sum is 42.

The square root of 1394630691 is about 37344.7545312591. The cubic root of 1394630691 is about 1117.2569702076.

The spelling of 1394630691 in words is "one billion, three hundred ninety-four million, six hundred thirty thousand, six hundred ninety-one".