1649230547 has 4 divisors (see below), whose sum is σ = 1651240176. Its totient is φ = 1647220920.

The previous prime is 1649230543. The next prime is 1649230559. The reversal of 1649230547 is 7450329461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7450329461 = 34913 ⋅213397.

It is a cyclic number.

It is not a de Polignac number, because 1649230547 - 2² = 1649230543 is a prime.

It is a super-2 number, since 2×1649230547² = 5439922794315838418, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1649230543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1003583 + ... + 1005224.

It is an arithmetic number, because the mean of its divisors is an integer number (412810044).

Almost surely, 2^1649230547 is an apocalyptic number.

1649230547 is a deficient number, since it is larger than the sum of its proper divisors (2009629).

1649230547 is an equidigital number, since it uses as much as digits as its factorization.

1649230547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2009628.

The product of its (nonzero) digits is 181440, while the sum is 41.

The square root of 1649230547 is about 40610.7196070200. The cubic root of 1649230547 is about 1181.4820378151.

The spelling of 1649230547 in words is "one billion, six hundred forty-nine million, two hundred thirty thousand, five hundred forty-seven".