1498478257 has 2 divisors, whose sum is σ = 1498478258. Its totient is φ = 1498478256.

The previous prime is 1498478231. The next prime is 1498478321. The reversal of 1498478257 is 7528748941.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1161719056 + 336759201 = 34084^2 + 18351^2 .

It is a cyclic number.

It is not a de Polignac number, because 1498478257 - 2¹⁵ = 1498445489 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1498478198 and 1498478207.

It is not a weakly prime, because it can be changed into another prime (1498478057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 749239128 + 749239129.

It is an arithmetic number, because the mean of its divisors is an integer number (749239129).

Almost surely, 2^1498478257 is an apocalyptic number.

It is an amenable number.

1498478257 is a deficient number, since it is larger than the sum of its proper divisors (1).

1498478257 is an equidigital number, since it uses as much as digits as its factorization.

1498478257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4515840, while the sum is 55.

The square root of 1498478257 is about 38710.1828592943. The cubic root of 1498478257 is about 1144.3270091559.

The spelling of 1498478257 in words is "one billion, four hundred ninety-eight million, four hundred seventy-eight thousand, two hundred fifty-seven".