1616150401 has 2 divisors, whose sum is σ = 1616150402. Its totient is φ = 1616150400.

The previous prime is 1616150387. The next prime is 1616150447. The reversal of 1616150401 is 1040516161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1200969025 + 415181376 = 34655^2 + 20376^2 .

It is a cyclic number.

It is not a de Polignac number, because 1616150401 - 2²⁵ = 1582595969 is a prime.

It is a super-2 number, since 2×1616150401² = 5223884237304921602, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1616150801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 808075200 + 808075201.

It is an arithmetic number, because the mean of its divisors is an integer number (808075201).

Almost surely, 2^1616150401 is an apocalyptic number.

It is an amenable number.

1616150401 is a deficient number, since it is larger than the sum of its proper divisors (1).

1616150401 is an equidigital number, since it uses as much as digits as its factorization.

1616150401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 1616150401 is about 40201.3731233151. The cubic root of 1616150401 is about 1173.5292661903.

Adding to 1616150401 its reverse (1040516161), we get a palindrome (2656666562).

The spelling of 1616150401 in words is "one billion, six hundred sixteen million, one hundred fifty thousand, four hundred one".