1963149217 has 4 divisors (see below), whose sum is σ = 2066472880. Its totient is φ = 1859825556.

The previous prime is 1963149197. The next prime is 1963149233. The reversal of 1963149217 is 7129413691.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1963149217 - 2¹¹ = 1963147169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1963149257) 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, 51661803 + ... + 51661840.

It is an arithmetic number, because the mean of its divisors is an integer number (516618220).

Almost surely, 2^1963149217 is an apocalyptic number.

It is an amenable number.

1963149217 is a deficient number, since it is larger than the sum of its proper divisors (103323663).

1963149217 is a wasteful number, since it uses less digits than its factorization.

1963149217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103323662.

The product of its digits is 81648, while the sum is 43.

The square root of 1963149217 is about 44307.4397477444. The cubic root of 1963149217 is about 1252.1348514783.

It can be divided in two parts, 196 and 3149217, that added together give a palindrome (3149413).

The spelling of 1963149217 in words is "one billion, nine hundred sixty-three million, one hundred forty-nine thousand, two hundred seventeen".