2149538197690 has 32 divisors (see below), whose sum is σ = 4255452391680. Its totient is φ = 776788924224.

The previous prime is 2149538197637. The next prime is 2149538197699. The reversal of 2149538197690 is 967918359412.

It is a super-2 number, since 2×2149538197690² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2149538197699) 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, 175897180 + ... + 175909399.

It is an arithmetic number, because the mean of its divisors is an integer number (132982887240).

It is a 1-persistent number, because it is pandigital, but 2⋅2149538197690 = 4299076395380 is not.

Almost surely, 2^{2149538197690} is an apocalyptic number.

2149538197690 is a deficient number, since it is larger than the sum of its proper divisors (2105914193990).

2149538197690 is a wasteful number, since it uses less digits than its factorization.

2149538197690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351806646.

The product of its (nonzero) digits is 29393280, while the sum is 64.

The spelling of 2149538197690 in words is "two trillion, one hundred forty-nine billion, five hundred thirty-eight million, one hundred ninety-seven thousand, six hundred ninety".