1969631453 has 2 divisors, whose sum is σ = 1969631454. Its totient is φ = 1969631452.

The previous prime is 1969631449. The next prime is 1969631479. The reversal of 1969631453 is 3541369691.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1533740569 + 435890884 = 39163^2 + 20878^2 .

It is a cyclic number.

It is not a de Polignac number, because 1969631453 - 2² = 1969631449 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1969631398 and 1969631407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1969631423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 984815726 + 984815727.

It is an arithmetic number, because the mean of its divisors is an integer number (984815727).

Almost surely, 2^1969631453 is an apocalyptic number.

It is an amenable number.

1969631453 is a deficient number, since it is larger than the sum of its proper divisors (1).

1969631453 is an equidigital number, since it uses as much as digits as its factorization.

1969631453 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 524880, while the sum is 47.

The square root of 1969631453 is about 44380.5301117506. The cubic root of 1969631453 is about 1253.5115028809.

The spelling of 1969631453 in words is "one billion, nine hundred sixty-nine million, six hundred thirty-one thousand, four hundred fifty-three".