2145633842 has 32 divisors (see below), whose sum is σ = 3538551744. Its totient is φ = 967680000.

The previous prime is 2145633829. The next prime is 2145633859. The reversal of 2145633842 is 2483365412.

It is a junction number, because it is equal to n+sod(n) for n = 2145633796 and 2145633805.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1860338 + ... + 1861490.

It is an arithmetic number, because the mean of its divisors is an integer number (110579742).

Almost surely, 2^2145633842 is an apocalyptic number.

2145633842 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2145633842 is a deficient number, since it is larger than the sum of its proper divisors (1392917902).

2145633842 is a wasteful number, since it uses less digits than its factorization.

2145633842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1754.

The product of its digits is 138240, while the sum is 38.

The square root of 2145633842 is about 46320.9870577042. The cubic root of 2145633842 is about 1289.7886082713.

The spelling of 2145633842 in words is "two billion, one hundred forty-five million, six hundred thirty-three thousand, eight hundred forty-two".