1097634378 has 16 divisors (see below), whose sum is σ = 2254600800. Its totient is φ = 355989456.

The previous prime is 1097634361. The next prime is 1097634379. The reversal of 1097634378 is 8734367901.

It is not an unprimeable number, because it can be changed into a prime (1097634379) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2471928 + ... + 2472371.

It is an arithmetic number, because the mean of its divisors is an integer number (140912550).

Almost surely, 2^1097634378 is an apocalyptic number.

1097634378 is an abundant number, since it is smaller than the sum of its proper divisors (1156966422).

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

1097634378 is a wasteful number, since it uses less digits than its factorization.

1097634378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4944341.

The product of its (nonzero) digits is 762048, while the sum is 48.

The square root of 1097634378 is about 33130.5656154555. The cubic root of 1097634378 is about 1031.5395890336.

It can be divided in two parts, 10976 and 34378, that added together give a palindrome (45354).

The spelling of 1097634378 in words is "one billion, ninety-seven million, six hundred thirty-four thousand, three hundred seventy-eight".