1097507478 has 16 divisors (see below), whose sum is σ = 2209748400. Its totient is φ = 363380256.

The previous prime is 1097507459. The next prime is 1097507513. The reversal of 1097507478 is 8747057901.

It is a super-3 number, since 3×1097507478³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 612925 + ... + 614712.

It is an arithmetic number, because the mean of its divisors is an integer number (138109275).

Almost surely, 2^1097507478 is an apocalyptic number.

1097507478 is an abundant number, since it is smaller than the sum of its proper divisors (1112240922).

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

1097507478 is a wasteful number, since it uses less digits than its factorization.

1097507478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1227791.

The product of its (nonzero) digits is 493920, while the sum is 48.

The square root of 1097507478 is about 33128.6504101812. The cubic root of 1097507478 is about 1031.4998346244.

The spelling of 1097507478 in words is "one billion, ninety-seven million, five hundred seven thousand, four hundred seventy-eight".