1973214551 has 32 divisors (see below), whose sum is σ = 2636540928. Its totient is φ = 1430922240.

The previous prime is 1973214533. The next prime is 1973214553. The reversal of 1973214551 is 1554123791.

It is not a de Polignac number, because 1973214551 - 2¹⁰ = 1973213527 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1973214553) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50471 + ... + 80583.

It is an arithmetic number, because the mean of its divisors is an integer number (82391904).

Almost surely, 2^1973214551 is an apocalyptic number.

1973214551 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1973214551 is a deficient number, since it is larger than the sum of its proper divisors (663326377).

1973214551 is a wasteful number, since it uses less digits than its factorization.

1973214551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30191.

The product of its digits is 37800, while the sum is 38.

The square root of 1973214551 is about 44420.8796738651. The cubic root of 1973214551 is about 1254.2711600112.

The spelling of 1973214551 in words is "one billion, nine hundred seventy-three million, two hundred fourteen thousand, five hundred fifty-one".