1097729402 has 64 divisors (see below), whose sum is σ = 2133872640. Its totient is φ = 410961600.

The previous prime is 1097729387. The next prime is 1097729417. The reversal of 1097729402 is 2049277901.

It is an interprime number because it is at equal distance from previous prime (1097729387) and next prime (1097729417).

It is a self number, because there is not a number n which added to its sum of digits gives 1097729402.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1209833 + ... + 1210739.

It is an arithmetic number, because the mean of its divisors is an integer number (33341760).

Almost surely, 2^1097729402 is an apocalyptic number.

1097729402 is a deficient number, since it is larger than the sum of its proper divisors (1036143238).

1097729402 is a wasteful number, since it uses less digits than its factorization.

1097729402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1227.

The product of its (nonzero) digits is 63504, while the sum is 41.

The square root of 1097729402 is about 33131.9996679947. Note that the first 3 decimals coincide. The cubic root of 1097729402 is about 1031.5693555301.

The spelling of 1097729402 in words is "one billion, ninety-seven million, seven hundred twenty-nine thousand, four hundred two".