1630340354 has 4 divisors (see below), whose sum is σ = 2445510534. Its totient is φ = 815170176.

The previous prime is 1630340321. The next prime is 1630340407. The reversal of 1630340354 is 4530430361.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4530430361 = 227 ⋅19957843.

It can be written as a sum of positive squares in only one way, i.e., 1477249225 + 153091129 = 38435^2 + 12373^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 407585087 + ... + 407585090.

Almost surely, 2^1630340354 is an apocalyptic number.

1630340354 is a deficient number, since it is larger than the sum of its proper divisors (815170180).

1630340354 is an equidigital number, since it uses as much as digits as its factorization.

1630340354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 815170179.

The product of its (nonzero) digits is 12960, while the sum is 29.

The square root of 1630340354 is about 40377.4733483907. The cubic root of 1630340354 is about 1176.9538288914.

The spelling of 1630340354 in words is "one billion, six hundred thirty million, three hundred forty thousand, three hundred fifty-four".