1253061973 has 4 divisors (see below), whose sum is σ = 1253137248. Its totient is φ = 1252986700.

The previous prime is 1253061961. The next prime is 1253061977. The reversal of 1253061973 is 3791603521.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1253061973 - 2⁵ = 1253061941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1253061977) 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, 361 + ... + 50062.

It is an arithmetic number, because the mean of its divisors is an integer number (313284312).

Almost surely, 2^1253061973 is an apocalyptic number.

It is an amenable number.

1253061973 is a deficient number, since it is larger than the sum of its proper divisors (75275).

1253061973 is an equidigital number, since it uses as much as digits as its factorization.

1253061973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75274.

The product of its (nonzero) digits is 34020, while the sum is 37.

The square root of 1253061973 is about 35398.6154107756. The cubic root of 1253061973 is about 1078.0962039083.

The spelling of 1253061973 in words is "one billion, two hundred fifty-three million, sixty-one thousand, nine hundred seventy-three".