1061660919 has 8 divisors (see below), whose sum is σ = 1544234112. Its totient is φ = 643430840.

The previous prime is 1061660911. The next prime is 1061660921. The reversal of 1061660919 is 9190661601.

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 1061660919 - 2³ = 1061660911 is a prime.

It is a super-2 number, since 2×1061660919² = 2254247813863849122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1061660911) 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, 16085739 + ... + 16085804.

It is an arithmetic number, because the mean of its divisors is an integer number (193029264).

Almost surely, 2^1061660919 is an apocalyptic number.

1061660919 is a deficient number, since it is larger than the sum of its proper divisors (482573193).

1061660919 is a wasteful number, since it uses less digits than its factorization.

1061660919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32171557.

The product of its (nonzero) digits is 17496, while the sum is 39.

The square root of 1061660919 is about 32583.1385688979. The cubic root of 1061660919 is about 1020.1450898951.

The spelling of 1061660919 in words is "one billion, sixty-one million, six hundred sixty thousand, nine hundred nineteen".