1954479133 has 4 divisors (see below), whose sum is σ = 1955608668. Its totient is φ = 1953349600.

The previous prime is 1954479113. The next prime is 1954479167. The reversal of 1954479133 is 3319744591.

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

It can be written as a sum of positive squares in 2 ways, for example, as 294568569 + 1659910564 = 17163^2 + 40742^2 .

It is a cyclic number.

It is not a de Polignac number, because 1954479133 - 2¹³ = 1954470941 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 (1954479113) 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, 562168 + ... + 565633.

It is an arithmetic number, because the mean of its divisors is an integer number (488902167).

Almost surely, 2^1954479133 is an apocalyptic number.

It is an amenable number.

1954479133 is a deficient number, since it is larger than the sum of its proper divisors (1129535).

1954479133 is a wasteful number, since it uses less digits than its factorization.

1954479133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1129534.

The product of its digits is 408240, while the sum is 46.

The square root of 1954479133 is about 44209.4914356635. The cubic root of 1954479133 is about 1250.2888149703.

The spelling of 1954479133 in words is "one billion, nine hundred fifty-four million, four hundred seventy-nine thousand, one hundred thirty-three".