1061555164 has 6 divisors (see below), whose sum is σ = 1857721544. Its totient is φ = 530777580.

The previous prime is 1061555129. The next prime is 1061555177. The reversal of 1061555164 is 4615551601.

It is a super-2 number, since 2×1061555164² = 2253798732430133792, 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 as a sum of consecutive naturals, namely, 132694392 + ... + 132694399.

Almost surely, 2^1061555164 is an apocalyptic number.

It is an amenable number.

1061555164 is a deficient number, since it is larger than the sum of its proper divisors (796166380).

1061555164 is a wasteful number, since it uses less digits than its factorization.

1061555164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265388795 (or 265388793 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 34.

The square root of 1061555164 is about 32581.5156799066. The cubic root of 1061555164 is about 1020.1112156061. Note that the first 3 decimals are identical.

The spelling of 1061555164 in words is "one billion, sixty-one million, five hundred fifty-five thousand, one hundred sixty-four".