2190453951 has 16 divisors (see below), whose sum is σ = 3338528000. Its totient is φ = 1251427968.

The previous prime is 2190453949. The next prime is 2190453971. The reversal of 2190453951 is 1593540912.

It is not a de Polignac number, because 2190453951 - 2¹ = 2190453949 is a prime.

It is a super-2 number, since 2×2190453951² = 9596177022903020802, 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 (2190453971) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 144375 + ... + 158823.

It is an arithmetic number, because the mean of its divisors is an integer number (208658000).

Almost surely, 2^2190453951 is an apocalyptic number.

2190453951 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2190453951 is a deficient number, since it is larger than the sum of its proper divisors (1148074049).

2190453951 is a wasteful number, since it uses less digits than its factorization.

2190453951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21678.

The product of its (nonzero) digits is 48600, while the sum is 39.

The square root of 2190453951 is about 46802.2857454633. The cubic root of 2190453951 is about 1298.7075816198.

It can be divided in two parts, 21904 and 53951, that added together give a triangular number (75855 = T₃₈₉).

The spelling of 2190453951 in words is "two billion, one hundred ninety million, four hundred fifty-three thousand, nine hundred fifty-one".