1954357073 has 4 divisors (see below), whose sum is σ = 1959957300. Its totient is φ = 1948756848.

The previous prime is 1954357061. The next prime is 1954357099. The reversal of 1954357073 is 3707534591.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3707534591 = 8677 ⋅427283.

It can be written as a sum of positive squares in 2 ways, for example, as 1330206784 + 624150289 = 36472^2 + 24983^2 .

It is a cyclic number.

It is not a de Polignac number, because 1954357073 - 2¹⁸ = 1954094929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1954357673) 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, 2799590 + ... + 2800287.

It is an arithmetic number, because the mean of its divisors is an integer number (489989325).

Almost surely, 2^1954357073 is an apocalyptic number.

It is an amenable number.

1954357073 is a deficient number, since it is larger than the sum of its proper divisors (5600227).

1954357073 is an equidigital number, since it uses as much as digits as its factorization.

1954357073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5600226.

The product of its (nonzero) digits is 396900, while the sum is 44.

The square root of 1954357073 is about 44208.1109413194. The cubic root of 1954357073 is about 1250.2627869905.

The spelling of 1954357073 in words is "one billion, nine hundred fifty-four million, three hundred fifty-seven thousand, seventy-three".