1948991294697 has 4 divisors (see below), whose sum is σ = 2598655059600. Its totient is φ = 1299327529796.

The previous prime is 1948991294683. The next prime is 1948991294711. The reversal of 1948991294697 is 7964921998491.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (1948991294683) and next prime (1948991294711).

It is a cyclic number.

It is not a de Polignac number, because 1948991294697 - 2²⁰ = 1948990246121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1948991274697) 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, 324831882447 + ... + 324831882452.

It is an arithmetic number, because the mean of its divisors is an integer number (649663764900).

Almost surely, 2^{1948991294697} is an apocalyptic number.

It is an amenable number.

1948991294697 is a deficient number, since it is larger than the sum of its proper divisors (649663764903).

1948991294697 is an equidigital number, since it uses as much as digits as its factorization.

1948991294697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649663764902.

The product of its digits is 634894848, while the sum is 78.

The spelling of 1948991294697 in words is "one trillion, nine hundred forty-eight billion, nine hundred ninety-one million, two hundred ninety-four thousand, six hundred ninety-seven".