1211438046 has 32 divisors (see below), whose sum is σ = 2982002688. Its totient is φ = 319500000.

The previous prime is 1211438023. The next prime is 1211438047. The reversal of 1211438046 is 6408341121.

It is a super-3 number, since 3×1211438046³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211438047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1108830 + ... + 1109921.

It is an arithmetic number, because the mean of its divisors is an integer number (93187584).

Almost surely, 2^1211438046 is an apocalyptic number.

1211438046 is an abundant number, since it is smaller than the sum of its proper divisors (1770564642).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1211438046 is a wasteful number, since it uses less digits than its factorization.

1211438046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2218776.

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 1211438046 is about 34805.7185818653. The cubic root of 1211438046 is about 1066.0242142794.

Adding to 1211438046 its reverse (6408341121), we get a palindrome (7619779167).

The spelling of 1211438046 in words is "one billion, two hundred eleven million, four hundred thirty-eight thousand, forty-six".