1211378498 has 16 divisors (see below), whose sum is σ = 2009412576. Its totient is φ = 543083040.

The previous prime is 1211378491. The next prime is 1211378533. The reversal of 1211378498 is 8948731121.

It is not an unprimeable number, because it can be changed into a prime (1211378491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 375536 + ... + 378747.

It is an arithmetic number, because the mean of its divisors is an integer number (125588286).

Almost surely, 2^1211378498 is an apocalyptic number.

1211378498 is a deficient number, since it is larger than the sum of its proper divisors (798034078).

1211378498 is a wasteful number, since it uses less digits than its factorization.

1211378498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 754369.

The product of its digits is 96768, while the sum is 44.

The square root of 1211378498 is about 34804.8631372112. The cubic root of 1211378498 is about 1066.0067472560.

The spelling of 1211378498 in words is "one billion, two hundred eleven million, three hundred seventy-eight thousand, four hundred ninety-eight".