1655167749 has 16 divisors (see below), whose sum is σ = 2220254400. Its totient is φ = 1096784640.

The previous prime is 1655167741. The next prime is 1655167751. The reversal of 1655167749 is 9477615561.

It is a happy number.

It is not a de Polignac number, because 1655167749 - 2³ = 1655167741 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1655167741) 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, 350494 + ... + 355184.

It is an arithmetic number, because the mean of its divisors is an integer number (138765900).

Almost surely, 2^1655167749 is an apocalyptic number.

It is an amenable number.

1655167749 is a deficient number, since it is larger than the sum of its proper divisors (565086651).

1655167749 is a wasteful number, since it uses less digits than its factorization.

1655167749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5380.

The product of its digits is 1587600, while the sum is 51.

The square root of 1655167749 is about 40683.7528873628. The cubic root of 1655167749 is about 1182.8981116579.

The spelling of 1655167749 in words is "one billion, six hundred fifty-five million, one hundred sixty-seven thousand, seven hundred forty-nine".