1862161245 has 112 divisors (see below), whose sum is σ = 3897025920. Its totient is φ = 836168832.

The previous prime is 1862161241. The next prime is 1862161267. The reversal of 1862161245 is 5421612681.

It is a happy number.

1862161245 is a `hidden beast` number, since 1 + 8 + 621 + 6 + 1 + 24 + 5 = 666.

It is not a de Polignac number, because 1862161245 - 2² = 1862161241 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1862161241) by changing a digit.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 1504767 + ... + 1506003.

Almost surely, 2^1862161245 is an apocalyptic number.

1862161245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1862161245 is an abundant number, since it is smaller than the sum of its proper divisors (2034864675).

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

1862161245 is an equidigital number, since it uses as much as digits as its factorization.

1862161245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1326 (or 1311 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 1862161245 is about 43152.7663655530. The cubic root of 1862161245 is about 1230.2850915601.

The spelling of 1862161245 in words is "one billion, eight hundred sixty-two million, one hundred sixty-one thousand, two hundred forty-five".