1497420918 has 48 divisors (see below), whose sum is σ = 3845237760. Its totient is φ = 427833576.

The previous prime is 1497420889. The next prime is 1497420919. The reversal of 1497420918 is 8190247941.

It is a happy number.

It is a super-3 number, since 3×1497420918³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1497420919) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 216678 + ... + 223481.

It is an arithmetic number, because the mean of its divisors is an integer number (80109120).

Almost surely, 2^1497420918 is an apocalyptic number.

1497420918 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1497420918 is an abundant number, since it is smaller than the sum of its proper divisors (2347816842).

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

1497420918 is an equidigital number, since it uses as much as digits as its factorization.

1497420918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440183 (or 440171 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 1497420918 is about 38696.5233322065. The cubic root of 1497420918 is about 1144.0577968705.

The spelling of 1497420918 in words is "one billion, four hundred ninety-seven million, four hundred twenty thousand, nine hundred eighteen".