1989295525954 has 16 divisors (see below), whose sum is σ = 3269425763520. Its totient is φ = 900276654960.

The previous prime is 1989295525879. The next prime is 1989295525957. The reversal of 1989295525954 is 4595255929891.

It is a super-2 number, since 2×1989295525954² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1989295525957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 197424054 + ... + 197434129.

It is an arithmetic number, because the mean of its divisors is an integer number (204339110220).

Almost surely, 2^{1989295525954} is an apocalyptic number.

1989295525954 is a deficient number, since it is larger than the sum of its proper divisors (1280130237566).

1989295525954 is a wasteful number, since it uses less digits than its factorization.

1989295525954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394858425.

The product of its digits is 524880000, while the sum is 73.

The spelling of 1989295525954 in words is "one trillion, nine hundred eighty-nine billion, two hundred ninety-five million, five hundred twenty-five thousand, nine hundred fifty-four".