1954665201 has 16 divisors (see below), whose sum is σ = 2674203840. Its totient is φ = 1269223680.

The previous prime is 1954665199. The next prime is 1954665211. The reversal of 1954665201 is 1025664591.

It is not a de Polignac number, because 1954665201 - 2¹ = 1954665199 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1954665201.

It is not an unprimeable number, because it can be changed into a prime (1954665211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63301 + ... + 88973.

It is an arithmetic number, because the mean of its divisors is an integer number (167137740).

Almost surely, 2^1954665201 is an apocalyptic number.

It is an amenable number.

1954665201 is a deficient number, since it is larger than the sum of its proper divisors (719538639).

1954665201 is a wasteful number, since it uses less digits than its factorization.

1954665201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26336.

The product of its (nonzero) digits is 64800, while the sum is 39.

The square root of 1954665201 is about 44211.5957753167. The cubic root of 1954665201 is about 1250.3284898813.

The spelling of 1954665201 in words is "one billion, nine hundred fifty-four million, six hundred sixty-five thousand, two hundred one".