1002100003838 has 4 divisors (see below), whose sum is σ = 1503150005760. Its totient is φ = 501050001918.

The previous prime is 1002100003837. The next prime is 1002100003843. The reversal of 1002100003838 is 8383000012001.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×1002100003838² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002100003837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250525000958 + ... + 250525000961.

It is an arithmetic number, because the mean of its divisors is an integer number (375787501440).

Almost surely, 2^{1002100003838} is an apocalyptic number.

1002100003838 is a deficient number, since it is larger than the sum of its proper divisors (501050001922).

1002100003838 is an equidigital number, since it uses as much as digits as its factorization.

1002100003838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501050001921.

The product of its (nonzero) digits is 1152, while the sum is 26.

Adding to 1002100003838 its reverse (8383000012001), we get a palindrome (9385100015839).

The spelling of 1002100003838 in words is "one trillion, two billion, one hundred million, three thousand, eight hundred thirty-eight".