1475897997 has 8 divisors (see below), whose sum is σ = 2248987456. Its totient is φ = 843370272.

The previous prime is 1475897953. The next prime is 1475898019. The reversal of 1475897997 is 7997985741.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1475897997 - 2⁶ = 1475897933 is a prime.

It is a super-2 number, since 2×1475897997² = 4356549795097224018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1475897897) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35140408 + ... + 35140449.

It is an arithmetic number, because the mean of its divisors is an integer number (281123432).

Almost surely, 2^1475897997 is an apocalyptic number.

It is an amenable number.

1475897997 is a deficient number, since it is larger than the sum of its proper divisors (773089459).

1475897997 is an equidigital number, since it uses as much as digits as its factorization.

1475897997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70280867.

The product of its digits is 40007520, while the sum is 66.

The square root of 1475897997 is about 38417.4178856414. The cubic root of 1475897997 is about 1138.5500178711.

The spelling of 1475897997 in words is "one billion, four hundred seventy-five million, eight hundred ninety-seven thousand, nine hundred ninety-seven".