1395654661 has 16 divisors (see below), whose sum is σ = 1500833664. Its totient is φ = 1293110784.

The previous prime is 1395654653. The next prime is 1395654703. The reversal of 1395654661 is 1664565931.

It is a cyclic number.

It is not a de Polignac number, because 1395654661 - 2³ = 1395654653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1395654641) 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, 1199466 + ... + 1200628.

It is an arithmetic number, because the mean of its divisors is an integer number (93802104).

Almost surely, 2^1395654661 is an apocalyptic number.

It is an amenable number.

1395654661 is a deficient number, since it is larger than the sum of its proper divisors (105179003).

1395654661 is a wasteful number, since it uses less digits than its factorization.

1395654661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2220.

The product of its digits is 583200, while the sum is 46.

The square root of 1395654661 is about 37358.4617054825. The cubic root of 1395654661 is about 1117.5303419201.

The spelling of 1395654661 in words is "one billion, three hundred ninety-five million, six hundred fifty-four thousand, six hundred sixty-one".