1662752741 has 8 divisors (see below), whose sum is σ = 1798479480. Its totient is φ = 1528143552.

The previous prime is 1662752723. The next prime is 1662752743. The reversal of 1662752741 is 1472572661.

It can be written as a sum of positive squares in 4 ways, for example, as 513203716 + 1149549025 = 22654^2 + 33905^2 .

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

It is not a de Polignac number, because 1662752741 - 2¹⁸ = 1662490597 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 (1662752743) 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, 276290 + ... + 282243.

It is an arithmetic number, because the mean of its divisors is an integer number (224809935).

Almost surely, 2^1662752741 is an apocalyptic number.

It is an amenable number.

1662752741 is a deficient number, since it is larger than the sum of its proper divisors (135726739).

1662752741 is a wasteful number, since it uses less digits than its factorization.

1662752741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 558775.

The product of its digits is 141120, while the sum is 41.

The square root of 1662752741 is about 40776.8652669623. The cubic root of 1662752741 is about 1184.7022796490.

The spelling of 1662752741 in words is "one billion, six hundred sixty-two million, seven hundred fifty-two thousand, seven hundred forty-one".