1157722166 has 32 divisors (see below), whose sum is σ = 1866473280. Its totient is φ = 537510400.

The previous prime is 1157722123. The next prime is 1157722183. The reversal of 1157722166 is 6612277511.

It is a super-2 number, since 2×1157722166² = 2680641227295463112, 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 (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 165410 + ... + 172266.

It is an arithmetic number, because the mean of its divisors is an integer number (58327290).

Almost surely, 2^1157722166 is an apocalyptic number.

1157722166 is a deficient number, since it is larger than the sum of its proper divisors (708751114).

1157722166 is a wasteful number, since it uses less digits than its factorization.

1157722166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7000.

The product of its digits is 35280, while the sum is 38.

The square root of 1157722166 is about 34025.3165451844. The cubic root of 1157722166 is about 1050.0293766535.

Adding to 1157722166 its reverse (6612277511), we get a palindrome (7769999677).

The spelling of 1157722166 in words is "one billion, one hundred fifty-seven million, seven hundred twenty-two thousand, one hundred sixty-six".