1061640334 has 12 divisors (see below), whose sum is σ = 1636667424. Its totient is φ = 516472344.

The previous prime is 1061640319. The next prime is 1061640341. The reversal of 1061640334 is 4330461601.

It is a super-2 number, since 2×1061640334² = 2254160397551263112, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 191134 + ... + 196609.

It is an arithmetic number, because the mean of its divisors is an integer number (136388952).

Almost surely, 2^1061640334 is an apocalyptic number.

1061640334 is a deficient number, since it is larger than the sum of its proper divisors (575027090).

1061640334 is an equidigital number, since it uses as much as digits as its factorization.

1061640334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387819 (or 387782 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 1061640334 is about 32582.8226831255. The cubic root of 1061640334 is about 1020.1384965086.

The spelling of 1061640334 in words is "one billion, sixty-one million, six hundred forty thousand, three hundred thirty-four".