1655921492 has 12 divisors (see below), whose sum is σ = 2907123156. Its totient is φ = 825314880.

The previous prime is 1655921461. The next prime is 1655921507. The reversal of 1655921492 is 2941295561.

It can be written as a sum of positive squares in 2 ways, for example, as 878292496 + 777628996 = 29636^2 + 27886^2 .

It is a congruent number.

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, 660059 + ... + 662562.

It is an arithmetic number, because the mean of its divisors is an integer number (242260263).

Almost surely, 2^1655921492 is an apocalyptic number.

It is an amenable number.

1655921492 is a deficient number, since it is larger than the sum of its proper divisors (1251201664).

1655921492 is a wasteful number, since it uses less digits than its factorization.

1655921492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1322938 (or 1322936 counting only the distinct ones).

The product of its digits is 194400, while the sum is 44.

The square root of 1655921492 is about 40693.0152728942. The cubic root of 1655921492 is about 1183.0776434838.

The spelling of 1655921492 in words is "one billion, six hundred fifty-five million, nine hundred twenty-one thousand, four hundred ninety-two".