2154768698938 has 8 divisors (see below), whose sum is σ = 3372681441888. Its totient is φ = 1030541551644.

The previous prime is 2154768698933. The next prime is 2154768698939. The reversal of 2154768698938 is 8398968674512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×2154768698938² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2154768698933) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23421398856 + ... + 23421398947.

It is an arithmetic number, because the mean of its divisors is an integer number (421585180236).

Almost surely, 2^{2154768698938} is an apocalyptic number.

2154768698938 is a deficient number, since it is larger than the sum of its proper divisors (1217912742950).

2154768698938 is a wasteful number, since it uses less digits than its factorization.

2154768698938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46842797828.

The product of its digits is 1254113280, while the sum is 76.

The spelling of 2154768698938 in words is "two trillion, one hundred fifty-four billion, seven hundred sixty-eight million, six hundred ninety-eight thousand, nine hundred thirty-eight".