1498697538 has 16 divisors (see below), whose sum is σ = 3227964096. Its totient is φ = 461137680.

The previous prime is 1498697491. The next prime is 1498697567. The reversal of 1498697538 is 8357968941.

It is a super-2 number, since 2×1498697538² = 4492188620814522888, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9606958 + ... + 9607113.

It is an arithmetic number, because the mean of its divisors is an integer number (201747756).

Almost surely, 2^1498697538 is an apocalyptic number.

1498697538 is an abundant number, since it is smaller than the sum of its proper divisors (1729266558).

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

1498697538 is a wasteful number, since it uses less digits than its factorization.

1498697538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19214089.

The product of its digits is 13063680, while the sum is 60.

The square root of 1498697538 is about 38713.0150982845. The cubic root of 1498697538 is about 1144.3828250992.

The spelling of 1498697538 in words is "one billion, four hundred ninety-eight million, six hundred ninety-seven thousand, five hundred thirty-eight".