1963869137 has 4 divisors (see below), whose sum is σ = 1988728320. Its totient is φ = 1939009956.

The previous prime is 1963869133. The next prime is 1963869139. The reversal of 1963869137 is 7319683691.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 7319683691 = 23 ⋅318247117.

It is a cyclic number.

It is not a de Polignac number, because 1963869137 - 2² = 1963869133 is a prime.

It is a super-2 number, since 2×1963869137² = 7713563974522249538, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1963869133) 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, 12429473 + ... + 12429630.

It is an arithmetic number, because the mean of its divisors is an integer number (497182080).

Almost surely, 2^1963869137 is an apocalyptic number.

It is an amenable number.

1963869137 is a deficient number, since it is larger than the sum of its proper divisors (24859183).

1963869137 is an equidigital number, since it uses as much as digits as its factorization.

1963869137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24859182.

The product of its digits is 1469664, while the sum is 53.

The square root of 1963869137 is about 44315.5631465967. The cubic root of 1963869137 is about 1252.2878924437.

The spelling of 1963869137 in words is "one billion, nine hundred sixty-three million, eight hundred sixty-nine thousand, one hundred thirty-seven".