1973978495 has 8 divisors (see below), whose sum is σ = 2493446640. Its totient is φ = 1496067840.

The previous prime is 1973978491. The next prime is 1973978509. The reversal of 1973978495 is 5948793791.

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

It is not a de Polignac number, because 1973978495 - 2² = 1973978491 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1973978491) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10389266 + ... + 10389455.

It is an arithmetic number, because the mean of its divisors is an integer number (311680830).

Almost surely, 2^1973978495 is an apocalyptic number.

1973978495 is a deficient number, since it is larger than the sum of its proper divisors (519468145).

1973978495 is a wasteful number, since it uses less digits than its factorization.

1973978495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20778745.

The product of its digits is 17146080, while the sum is 62.

The square root of 1973978495 is about 44429.4777709574. The cubic root of 1973978495 is about 1254.4330057832.

The spelling of 1973978495 in words is "one billion, nine hundred seventy-three million, nine hundred seventy-eight thousand, four hundred ninety-five".