1662571434 has 16 divisors (see below), whose sum is σ = 3325678560. Its totient is φ = 554101200.

The previous prime is 1662571411. The next prime is 1662571501. The reversal of 1662571434 is 4341752661.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1662571392 and 1662571401.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26112 + ... + 63300.

It is an arithmetic number, because the mean of its divisors is an integer number (207854910).

Almost surely, 2^1662571434 is an apocalyptic number.

1662571434 is an abundant number, since it is smaller than the sum of its proper divisors (1663107126).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1662571434 is a wasteful number, since it uses less digits than its factorization.

1662571434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44645.

The product of its digits is 120960, while the sum is 39.

The square root of 1662571434 is about 40774.6420462522. The cubic root of 1662571434 is about 1184.6592180002.

The spelling of 1662571434 in words is "one billion, six hundred sixty-two million, five hundred seventy-one thousand, four hundred thirty-four".