1946949553 has 2 divisors, whose sum is σ = 1946949554. Its totient is φ = 1946949552.

The previous prime is 1946949491. The next prime is 1946949577. The reversal of 1946949553 is 3559496491.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1902966129 + 43983424 = 43623^2 + 6632^2 .

It is a cyclic number.

It is not a de Polignac number, because 1946949553 - 2⁹ = 1946949041 is a prime.

It is a super-2 number, since 2×1946949553² = 7581225123853799618, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1946949494 and 1946949503.

It is not a weakly prime, because it can be changed into another prime (1946949253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 973474776 + 973474777.

It is an arithmetic number, because the mean of its divisors is an integer number (973474777).

Almost surely, 2^1946949553 is an apocalyptic number.

It is an amenable number.

1946949553 is a deficient number, since it is larger than the sum of its proper divisors (1).

1946949553 is an equidigital number, since it uses as much as digits as its factorization.

1946949553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5248800, while the sum is 55.

The square root of 1946949553 is about 44124.2513024301. The cubic root of 1946949553 is about 1248.6811803678.

The spelling of 1946949553 in words is "one billion, nine hundred forty-six million, nine hundred forty-nine thousand, five hundred fifty-three".