1622191964409 has 45 divisors (see below), whose sum is σ = 2476753014901. Its totient is φ = 1058099966280.

The previous prime is 1622191964369. The next prime is 1622191964423. The reversal of 1622191964409 is 9044691912261.

The square root of 1622191964409 is 1273653.

It is a perfect power (a square), and thus also a powerful number.

1622191964409 is a `hidden beast` number, since 1 + 6 + 2 + 2 + 1 + 9 + 196 + 440 + 9 = 666.

It is not a de Polignac number, because 1622191964409 - 2¹⁵ = 1622191931641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1622191963409) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 538753714 + ... + 538756724.

Almost surely, 2^{1622191964409} is an apocalyptic number.

1622191964409 is the 1273653-rd square number.

1622191964409 is the 636827-th centered octagonal number.

It is an amenable number.

1622191964409 is a deficient number, since it is larger than the sum of its proper divisors (854561050492).

1622191964409 is an frugal number, since it uses more digits than its factorization.

1622191964409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6128 (or 3061 counting only the distinct ones).

The product of its (nonzero) digits is 1679616, while the sum is 54.

The spelling of 1622191964409 in words is "one trillion, six hundred twenty-two billion, one hundred ninety-one million, nine hundred sixty-four thousand, four hundred nine".