1662043071 has 32 divisors (see below), whose sum is σ = 2487751168. Its totient is φ = 980242560.

The previous prime is 1662043067. The next prime is 1662043081. The reversal of 1662043071 is 1703402661.

It is not a de Polignac number, because 1662043071 - 2² = 1662043067 is a prime.

It is a super-2 number, since 2×1662043071² = 5524774339718222082, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1662043081) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 88086 + ... + 105276.

It is an arithmetic number, because the mean of its divisors is an integer number (77742224).

Almost surely, 2^1662043071 is an apocalyptic number.

1662043071 is a deficient number, since it is larger than the sum of its proper divisors (825708097).

1662043071 is a wasteful number, since it uses less digits than its factorization.

1662043071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17311.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 1662043071 is about 40768.1624677885. The cubic root of 1662043071 is about 1184.5337103270.

The spelling of 1662043071 in words is "one billion, six hundred sixty-two million, forty-three thousand, seventy-one".