1954651513 has 8 divisors (see below), whose sum is σ = 1999731456. Its totient is φ = 1910059200.

The previous prime is 1954651511. The next prime is 1954651519. The reversal of 1954651513 is 3151564591.

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

It is a cyclic number.

It is not a de Polignac number, because 1954651513 - 2¹ = 1954651511 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1954651511) 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, 113793 + ... + 129838.

It is an arithmetic number, because the mean of its divisors is an integer number (249966432).

Almost surely, 2^1954651513 is an apocalyptic number.

It is an amenable number.

1954651513 is a deficient number, since it is larger than the sum of its proper divisors (45079943).

1954651513 is a wasteful number, since it uses less digits than its factorization.

1954651513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243815.

The product of its digits is 81000, while the sum is 40.

The square root of 1954651513 is about 44211.4409740284. The cubic root of 1954651513 is about 1250.3255713020.

The spelling of 1954651513 in words is "one billion, nine hundred fifty-four million, six hundred fifty-one thousand, five hundred thirteen".