1663165741 has 8 divisors (see below), whose sum is σ = 1760376800. Its totient is φ = 1566922320.

The previous prime is 1663165733. The next prime is 1663165759. The reversal of 1663165741 is 1475613661.

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

It is a cyclic number.

It is not a de Polignac number, because 1663165741 - 2³ = 1663165733 is a prime.

It is a super-2 number, since 2×1663165741² = 5532240564072158162, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1663165694 and 1663165703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1663135741) 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, 238371 + ... + 245248.

It is an arithmetic number, because the mean of its divisors is an integer number (220047100).

Almost surely, 2^1663165741 is an apocalyptic number.

It is an amenable number.

1663165741 is a deficient number, since it is larger than the sum of its proper divisors (97211059).

1663165741 is a wasteful number, since it uses less digits than its factorization.

1663165741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 483819.

The product of its digits is 90720, while the sum is 40.

The square root of 1663165741 is about 40781.9290985603. The cubic root of 1663165741 is about 1184.8003582799.

The spelling of 1663165741 in words is "one billion, six hundred sixty-three million, one hundred sixty-five thousand, seven hundred forty-one".