1946949577 has 2 divisors, whose sum is σ = 1946949578. Its totient is φ = 1946949576.

The previous prime is 1946949553. The next prime is 1946949691. The reversal of 1946949577 is 7759496491.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1946927376 + 22201 = 44124^2 + 149^2 .

It is an emirp because it is prime and its reverse (7759496491) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1946949577 - 2¹⁹ = 1946425289 is a prime.

It is a super-2 number, since 2×1946949577² = 7581225310760957858, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1946949077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 973474788 + 973474789.

It is an arithmetic number, because the mean of its divisors is an integer number (973474789).

Almost surely, 2^1946949577 is an apocalyptic number.

It is an amenable number.

1946949577 is a deficient number, since it is larger than the sum of its proper divisors (1).

1946949577 is an equidigital number, since it uses as much as digits as its factorization.

1946949577 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17146080, while the sum is 61.

The square root of 1946949577 is about 44124.2515743893. The cubic root of 1946949577 is about 1248.6811854987.

The spelling of 1946949577 in words is "one billion, nine hundred forty-six million, nine hundred forty-nine thousand, five hundred seventy-seven".