1218140410 has 16 divisors (see below), whose sum is σ = 2193321096. Its totient is φ = 487107648.

The previous prime is 1218140387. The next prime is 1218140449. The reversal of 1218140410 is 140418121.

It can be written as a sum of positive squares in 4 ways, for example, as 1039998001 + 178142409 = 32249^2 + 13347^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19624 + ... + 53116.

Almost surely, 2^1218140410 is an apocalyptic number.

1218140410 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1218140410 is a deficient number, since it is larger than the sum of its proper divisors (975180686).

1218140410 is a wasteful number, since it uses less digits than its factorization.

1218140410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37137.

The product of its (nonzero) digits is 256, while the sum is 22.

The square root of 1218140410 is about 34901.8682881017. The cubic root of 1218140410 is about 1067.9865504672.

Adding to 1218140410 its reverse (140418121), we get a palindrome (1358558531).

The spelling of 1218140410 in words is "one billion, two hundred eighteen million, one hundred forty thousand, four hundred ten".