1098980357 has 2 divisors, whose sum is σ = 1098980358. Its totient is φ = 1098980356.

The previous prime is 1098980329. The next prime is 1098980383. The reversal of 1098980357 is 7530898901.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 701137441 + 397842916 = 26479^2 + 19946^2 .

It is a cyclic number.

It is not a de Polignac number, because 1098980357 - 2¹² = 1098976261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1098983357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 549490178 + 549490179.

It is an arithmetic number, because the mean of its divisors is an integer number (549490179).

Almost surely, 2^1098980357 is an apocalyptic number.

It is an amenable number.

1098980357 is a deficient number, since it is larger than the sum of its proper divisors (1).

1098980357 is an equidigital number, since it uses as much as digits as its factorization.

1098980357 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 544320, while the sum is 50.

The square root of 1098980357 is about 33150.8726431145. The cubic root of 1098980357 is about 1031.9610601281.

The spelling of 1098980357 in words is "one billion, ninety-eight million, nine hundred eighty thousand, three hundred fifty-seven".