2102153444 has 6 divisors (see below), whose sum is σ = 3678768534. Its totient is φ = 1051076720.

The previous prime is 2102153437. The next prime is 2102153447. The reversal of 2102153444 is 4443512012.

It can be written as a sum of positive squares in only one way, i.e., 1342489600 + 759663844 = 36640^2 + 27562^2 .

It is a super-2 number, since 2×2102153444² = 8838098204242122272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2102153447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262769177 + ... + 262769184.

It is an arithmetic number, because the mean of its divisors is an integer number (613128089).

Almost surely, 2^2102153444 is an apocalyptic number.

It is an amenable number.

2102153444 is a deficient number, since it is larger than the sum of its proper divisors (1576615090).

2102153444 is a wasteful number, since it uses less digits than its factorization.

2102153444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525538365 (or 525538363 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 2102153444 is about 45849.2469294753. The cubic root of 2102153444 is about 1281.0167385500.

Adding to 2102153444 its reverse (4443512012), we get a palindrome (6545665456).

The spelling of 2102153444 in words is "two billion, one hundred two million, one hundred fifty-three thousand, four hundred forty-four".