7993612654 has 4 divisors (see below), whose sum is σ = 11990418984. Its totient is φ = 3996806326.

The previous prime is 7993612609. The next prime is 7993612657. The reversal of 7993612654 is 4562163997.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7993612657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1998403162 + ... + 1998403165.

It is an arithmetic number, because the mean of its divisors is an integer number (2997604746).

Almost surely, 2^7993612654 is an apocalyptic number.

7993612654 is a deficient number, since it is larger than the sum of its proper divisors (3996806330).

7993612654 is a wasteful number, since it uses less digits than its factorization.

7993612654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3996806329.

The product of its digits is 2449440, while the sum is 52.

The square root of 7993612654 is about 89407.0056203651. The cubic root of 7993612654 is about 1999.4675794434.

The spelling of 7993612654 in words is "seven billion, nine hundred ninety-three million, six hundred twelve thousand, six hundred fifty-four".