1461007738 has 4 divisors (see below), whose sum is σ = 2191511610. Its totient is φ = 730503868.

The previous prime is 1461007721. The next prime is 1461007739. The reversal of 1461007738 is 8377001641.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8377001641 = 40013 ⋅209357.

It can be written as a sum of positive squares in only one way, i.e., 1426044169 + 34963569 = 37763^2 + 5913^2 .

It is a super-2 number, since 2×1461007738² = 4269087220991753288, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1461007697 and 1461007706.

It is not an unprimeable number, because it can be changed into a prime (1461007739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 365251933 + ... + 365251936.

Almost surely, 2^1461007738 is an apocalyptic number.

1461007738 is a deficient number, since it is larger than the sum of its proper divisors (730503872).

1461007738 is an equidigital number, since it uses as much as digits as its factorization.

1461007738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 730503871.

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 1461007738 is about 38223.1309287976. The cubic root of 1461007738 is about 1134.7081444075.

The spelling of 1461007738 in words is "one billion, four hundred sixty-one million, seven thousand, seven hundred thirty-eight".