1012161852 has 48 divisors (see below), whose sum is σ = 2825982880. Its totient is φ = 311433984.

The previous prime is 1012161847. The next prime is 1012161853. The reversal of 1012161852 is 2581612101.

It is a super-2 number, since 2×1012161852² = 2048943229288139808, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012161853) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 359053 + ... + 361860.

Almost surely, 2^1012161852 is an apocalyptic number.

1012161852 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1012161852 is an abundant number, since it is smaller than the sum of its proper divisors (1813821028).

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

1012161852 is a wasteful number, since it uses less digits than its factorization.

1012161852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 720939 (or 720931 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 27.

The square root of 1012161852 is about 31814.4912264836. The cubic root of 1012161852 is about 1004.0376262995.

Adding to 1012161852 its reverse (2581612101), we get a palindrome (3593773953).

The spelling of 1012161852 in words is "one billion, twelve million, one hundred sixty-one thousand, eight hundred fifty-two".