1949801700609 has 189 divisors, whose sum is σ = 3494048368993. Its totient is φ = 1047666899664.

The previous prime is 1949801700569. The next prime is 1949801700617. The reversal of 1949801700609 is 9060071089491.

The square root of 1949801700609 is 1396353.

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

1949801700609 is a `hidden beast` number, since 19 + 4 + 9 + 8 + 0 + 17 + 0 + 0 + 609 = 666.

It is not a de Polignac number, because 1949801700609 - 2¹⁷ = 1949801569537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1949801700689) by changing a digit.

It is a polite number, since it can be written in 188 ways as a sum of consecutive naturals, for example, 33047486422 + ... + 33047486480.

Almost surely, 2^{1949801700609} is an apocalyptic number.

1949801700609 is the 1396353-rd square number.

1949801700609 is the 698177-th centered octagonal number.

It is an amenable number.

1949801700609 is a deficient number, since it is larger than the sum of its proper divisors (1544246668384).

1949801700609 is an frugal number, since it uses more digits than its factorization.

1949801700609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212 (or 92 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 54.

The spelling of 1949801700609 in words is "one trillion, nine hundred forty-nine billion, eight hundred one million, seven hundred thousand, six hundred nine".