1097405938 has 4 divisors (see below), whose sum is σ = 1646108910. Its totient is φ = 548702968.

The previous prime is 1097405929. The next prime is 1097405957. The reversal of 1097405938 is 8395047901.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 694480609 + 402925329 = 26353^2 + 20073^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 274351483 + ... + 274351486.

Almost surely, 2^1097405938 is an apocalyptic number.

1097405938 is a deficient number, since it is larger than the sum of its proper divisors (548702972).

1097405938 is an equidigital number, since it uses as much as digits as its factorization.

1097405938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548702971.

The product of its (nonzero) digits is 272160, while the sum is 46.

The square root of 1097405938 is about 33127.1178643721. The cubic root of 1097405938 is about 1031.4680226245.

It can be divided in two parts, 109 and 7405938, that added together give a palindrome (7406047).

The spelling of 1097405938 in words is "one billion, ninety-seven million, four hundred five thousand, nine hundred thirty-eight".